Associations among stressors, perceived stress, and psychological distress in nursing students: a mixed methods longitudinal study of a Hong Kong sample
Open accessAbstract
Background: Nursing students are at risk for high-stress levels and psychological distress. Limited longitudinal studies have been conducted examining factors associated with stress levels and psychological distress of nursing students in their course of study. Purpose: The purpose of this study was to examine the levels of stress and corresponding stressors, particularly those predicting psychological distress, among nursing students over their 5 years of study. Methods: A longitudinal design, using questionnaires and focus group interviews of a single cohort of nursing students in Hong Kong and following them over their 5 years of training. The Stressors in Nursing Students Scale-Chinese version and the Chinese version of General Health Questionnaire-12 were used to assess stress levels and psychological distress, respectively. Results: Ninety-seven participants completed the questionnaires 5 times. Quantitative findings revealed that the overall stress levels of the nursing students increased over 5 years (from mean = 3.08 to 3.33), with the highest levels in the second wave (mean = 3.33). Nursing students experienced higher stress during years 2 ( p = 0.006) and 4 ( p = 0.037). Psychological distress was the highest in year 3 (sum score = 18.47) ( p = 0.002) but declined from year 4 ( p < 0.001). Thematic analysis revealed that academic performance issues, coping challenges, unfavorable learning environments, relationships were identified as the stressors. However, nursing students also used positive coping strategies to pursue success and seek support. Conclusion: This study suggests that the year of study is a significant predictor of stress levels among nursing students, especially during the first and senior years due to heavy academic workload. Psychological distress was observed among nursing students, and those who worked more part-time jobs tended to report higher levels of distress. The junior year was associated with higher levels of distress related to financial and time-related stress, while academic and personal problems were more prevalent during the senior year.
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
High rates of distress may be attributed to the demanding nature of nursing education.
“These high rates of distress may be attributed to the inherently demanding nature of nursing education, which integrates rigorous theoretical coursework with intensive clinical practice [8].”
From Associations of psychological flexibility, mindfulness, and valued living with psychological distress among nursing students (2025) · cites this paper as [8]
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Cites
Faul, F., Erdfelder, E., Lang, A.-G., & Buchner, A. (2007) · Behavior Research Methods · doi:10.3758/bf03193146 · Cited by 65,971 · see citing works
Tong, A., Sainsbury, P., & Craig, J. (2007) · International Journal for Quality in Health Care · doi:10.1093/intqhc/mzm042 · Cited by 42,509 · see citing works
Eysenck, H. J. (1985) · Behaviour Research and Therapy · doi:10.1016/0005-7967(85)90087-7 · Cited by 32,026 · see citing works
von Elm, E., Altman, D. G., Egger, M., Pocock, S. J., Gøtzsche, P. C., Vandenbroucke, J. P., & Initiative, F. T. S. (2007) · Annals of Internal Medicine · doi:10.7326/0003-4819-147-8-200710160-00010 · Cited by 17,796 · see citing works
Focus Groups: A Practical Guide for Applied Research
McQuarrie, E. F., & Krueger, R. A. (1989) · Journal of Marketing Research · doi:10.2307/3172912 · Cited by 15,489 · see citing works
Generalized linear mixed models: a practical guide for ecology and evolution
Bolker, B. M., Brooks, M. E., Clark, C. J., Geange, S. W., Poulsen, J. R., Stevens, M. H. H., & White, J.-S. S. (2009) · Trends in Ecology & Evolution · doi:10.1016/j.tree.2008.10.008 · Cited by 8,910 · see citing works
You want to measure coping but your protocol’ too long: Consider the brief cope
Carver, C. S. (1997) · International Journal of Behavioral Medicine · doi:10.1207/s15327558ijbm0401_6 · Cited by 7,361 · see citing works
Thematic analysis of qualitative data: AMEE Guide No. 131
Kiger, M. E., & Varpio, L. (2020) · Medical Teacher · doi:10.1080/0142159x.2020.1755030 · Cited by 3,787 · see citing works
The Validity of Two Versions of the GHQ in the WHO Study of Mental Illness in General Health Care
GOLDBERG, D. P., GATER, R., SARTORIUS, N., USTUN, T. B., PICCINELLI, M., GUREJE, O., & RUTTER, C. (1997) · Psychological Medicine · doi:10.1017/s0033291796004242 · Cited by 3,657 · see citing works
What can “thematic analysis” offer health and wellbeing researchers?
Braun, V., & Clarke, V. (2014) · International Journal of Qualitative Studies on Health and Well-being · doi:10.3402/qhw.v9.26152 · Cited by 3,056 · see citing works
Generalized, Linear, and Mixed Models
McCulloch, C. E., & Searle, S. R. (2000) · Wiley series in probability and statistics · doi:10.1002/0471722073 · Cited by 3,019 · see citing works
Global prevalence of burnout symptoms among nurses: a systematic review and meta-analysis
Woo, T., Ho, R., Tang, A., & Tam, W. (2020) · Journal of Psychiatric Research · doi:10.1016/j.jpsychires.2019.12.015 · Cited by 866 · see citing works
Likelihood and the Bayes procedure
Akaike, H. (1980) · Trabajos de Estadistica y de Investigacion Operativa · doi:10.1007/bf02888350 · Cited by 729 · see citing works
Learning considered within a cultural context: Confucian and Socratic approaches.
Tweed, R. G., & Lehman, D. R. (2002) · American Psychologist · doi:10.1037//0003-066x.57.2.89 · Cited by 635 · see citing works
von Stumm, S., Hell, B., & Chamorro‐Premuzic, T. (2011) · Perspectives on Psychological Science · doi:10.1177/1745691611421204 · Cited by 550 · see citing works
Learning considered within a cultural context: Confucian and Socratic approaches.
Tweed, R. G., & Lehman, D. R. (2002) · American Psychologist · doi:10.1037/0003-066x.57.2.89 · Cited by 467 · see citing works
Nurses’ job stress and its impact on quality of life and caring behaviors: a cross-sectional study
Babapour, A.-R., Gahassab-Mozaffari, N., & Fathnezhad‐Kazemi, A. (2022) · BMC Nursing · doi:10.1186/s12912-022-00852-y · Cited by 465 · see citing works
A longitudinal cohort study of burnout and attrition in nursing students
Deary, I. J., Watson, R. A., & Hogston, R. (2003) · Journal of Advanced Nursing · doi:10.1046/j.1365-2648.2003.02674.x · Cited by 455 · see citing works
Rohleder, N. (2019) · Psychoneuroendocrinology · doi:10.1016/j.psyneuen.2019.02.021 · Cited by 439 · see citing works
Resilience, stress, and psychological well-being in nursing students: A systematic review
Li, Z.-S., & Hasson, F. (2020) · Nurse Education Today · doi:10.1016/j.nedt.2020.104440 · Cited by 416 · see citing works
Changes in Undergraduate Students’ Psychological Well-Being as They Experience University Life
Liu, X., Ping, S., & Gao, W. (2019) · International Journal of Environmental Research and Public Health · doi:10.3390/ijerph16162864 · Cited by 261 · see citing works
Reducing stress, anxiety and depression in undergraduate nursing students: Systematic review
Aloufi, M. A., Jarden, R., Gerdtz, M. F., & Kapp, S. (2021) · Nurse Education Today · doi:10.1016/j.nedt.2021.104877 · Cited by 249 · see citing works
Zafra, M. D. O., Fernández-Muñóz, J. J., Martínez, E. F., García‐Sánchez, F. J., Abreu‐Sánchez, A., & Parra-Fernández, M. L. (2020) · BMC Medical Education · doi:10.1186/s12909-020-02294-z · Cited by 247 · see citing works
A study of stress and burnout in nursing students in Hong Kong: A questionnaire survey
Watson, R. A., Deary, I. J., Thompson, D. R., & Li, G. (2008) · International Journal of Nursing Studies · doi:10.1016/j.ijnurstu.2007.11.003 · Cited by 246 · see citing works
Stress and Psychological Distress in Emerging Adulthood: A Gender Analysis
Aznar, M. P. M., Díaz, A., Pérez, J. M. B., & Fernández, I. I. (2020) · Journal of Clinical Medicine · doi:10.3390/jcm9092859 · Cited by 229 · see citing works
Ching, S. S. Y., Cheung, K., Hegney, D. G., & Rees, C. S. (2019) · Nurse Education in Practice · doi:10.1016/j.nepr.2019.102690 · Cited by 176 · see citing works
Burnard, P., Edwards, D. J., Bennett, K., Thaibah, H., Tóthová, V., Baldacchino, D., Bara, P., & Mytevelli, J. (2007) · Nurse Education Today · doi:10.1016/j.nedt.2007.04.002 · Cited by 148 · see citing works
Stress and Coping Among Nursing Students During Clinical Training: An Integrative Review
Bhurtun, H. D., Azimirad, M., Saaranen, T. K., & Turunen, H. E. (2019) · Journal of Nursing Education · doi:10.3928/01484834-20190422-04 · Cited by 144 · see citing works
Chaabane, S., Chaabna, K., Bhagat, S., Abraham, A., Doraiswamy, S., Mamtani, R., & Cheema, S. (2021) · Systematic Reviews · doi:10.1186/s13643-021-01691-9 · Cited by 136 · see citing works
Lin, H., Probst, J. C., & Hsu, Y. (2010) · Journal of Clinical Nursing · doi:10.1111/j.1365-2702.2010.03216.x · Cited by 132 · see citing works
A call for longitudinal research in positive organizational behavior
Avey, J. B., Luthans, F., & Mhatre, K. H. (2008) · Journal of Organizational Behavior · doi:10.1002/job.517 · Cited by 132 · see citing works
Socialization in Open Source Software Projects: A Growth Mixture Modeling Approach
Qureshi, I., & Fang, Y. (2010) · Organizational Research Methods · doi:10.1177/1094428110375002 · Cited by 121 · see citing works
Stress, psychological distress, burnout and perfectionism in UK dental students
Collin, V., O’Selmo, E., & Whitehead, P. (2020) · BDJ · doi:10.1038/s41415-020-2281-4 · Cited by 115 · see citing works
Knowles, S. R., Apputhurai, P., O’Brien, C. L., Ski, C. F., Thompson, D. R., & Castle, D. J. (2019) · Psychology Health & Medicine · doi:10.1080/13548506.2019.1695865 · Cited by 109 · see citing works
Nursing students' stress and coping strategies during clinical training in KSA
Ahmed, W. A. M., & Mohammed, B. M. A. (2019) · Journal of Taibah University Medical Sciences · doi:10.1016/j.jtumed.2019.02.002 · Cited by 107 · see citing works
Curriculum design and attrition among undergraduate nursing students: A systematic review
Chan, C. Y. Z., Cheng, W. Y., Fong, M. K., Fung, Y. S., Ki, Y. M., Li, Y. L., Wong, H. T., Wong, T. L., & Tsoi, W. F. (2018) · Nurse Education Today · doi:10.1016/j.nedt.2018.11.024 · Cited by 96 · see citing works
Self-citationLi, W. H. C., Chung, J. O. K., Chui, M. M. L., & Chan, P. S. (2009) · Journal of Clinical Nursing · doi:10.1111/j.1365-2702.2009.02905.x · Cited by 81 · see citing works
Predictors of psychological distress amongst nursing students: A multicenter cross-sectional study
Salvarani, V., Ardenghi, S., Rampoldi, G., Bani, M., Cannata, P., Ausili, D., Mauro, S. D., & Strepparava, M. G. (2020) · Nurse Education in Practice · doi:10.1016/j.nepr.2020.102758 · Cited by 79 · see citing works
Rural hospital nurse's stressors and coping strategies: a survey
LeSergent, C. M., & Haney, C. J. (2004) · International Journal of Nursing Studies · doi:10.1016/j.ijnurstu.2004.06.017 · Cited by 61 · see citing works
Sanad, H. M. (2019) · American journal of nursing research · doi:10.12691/ajnr-7-6-13 · Cited by 58 · see citing works
Fornés‐Vives, J., García‐Banda, G., Navarro, M. D. F., & Pascual‐Soler, M. (2018) · Personality and Individual Differences · doi:10.1016/j.paid.2018.10.014 · Cited by 55 · see citing works
Nursing and Coping With Stress
Laal, M., & Aliramaie, N. (2010) · International journal of collaborative research on internal medicine & public health · Cited by 50 · see citing works
Xu, S.-L., Ouyang, X., Shi, X., Li, Y., Chen, D., Lai, Y., & Fan, F. (2019) · Journal of Psychosomatic Research · doi:10.1016/j.jpsychores.2019.109870 · Cited by 40 · see citing works
Level of stress and coping strategies used by nursing interns
Singh, C., Sharma, S., & Sharma, R. K. (2011) · Nursing & Midwifery Research Journal · doi:10.1177/0974150x20110402 · Cited by 40 · see citing works
Cheng, W. L. S., Young, P., & Luk, K. K. H. (2022) · International Journal of Environmental Research and Public Health · doi:10.3390/ijerph191811822 · Cited by 30 · see citing works
Self-citationGuo, M., Wang, L., Day, J. J., & Chen, Y. (2021) · Frontiers in Psychology · doi:10.3389/fpsyg.2021.724675 · Cited by 22 · see citing works
Adapting the Brief COPE for Chinese Adolescents with Visual Impairments
Yuan, W., Zhang, L., & Li, B. (2017) · Journal of Visual Impairment & Blindness · doi:10.1177/0145482x1711100103 · Cited by 20 · see citing works
We should pay more attention to student curiosity
Cain, J. J. (2019) · Currents in Pharmacy Teaching and Learning · doi:10.1016/j.cptl.2019.03.001 · Cited by 20 · see citing works
Xie, Y. J., Lin, M.-J., Wong, Y.-T., Yan, L.-J., Zhang, D.-X., & Gao, Y. (2022) · Journal of Pain Research · doi:10.2147/jpr.s337465 · Cited by 16 · see citing works
Le, T. K. D. (2021) · Anthropological Researches and Studies · doi:10.26758/11.1.4 · Cited by 14 · see citing works
Impact of Eustress on Work-life Balance: An Analysis on Public Sector Bank Employees in South India
Pavithra, A. C., & Sivakumar, V. J. (2020) · Asia-Pacific Journal of Management Research and Innovation · doi:10.1177/2319510x21994045 · Cited by 5 · see citing works
Mazalová, L., Gurková, E., & Štureková, L. (2022) · Kontakt · doi:10.32725/kont.2022.030 · Cited by 4 · see citing works
Ming, M., Liu, Qin, Gu, Thomas, Wong, Roger, R., & Watson (2014) · Acta Scientiarum Naturalium Universitatis Sunyatseni · Cited by 2 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Xu, J., Zhang, L., Ji, Q., Ji, P., Chen, Y., Song, M., & Guo, L. (2023) · BMC Nursing · doi:10.1186/s12912-023-01607-z · Cited by 51 · see citing works
William, S., Hegazi, I., & Peters, K. (2024) · Contemporary Nurse · doi:10.1080/10376178.2024.2370932 · Cited by 18 · see citing works
Αντωνιάδου, Μ., Manta, G., Kanellopoulou, A., Kalogerakou, T., Satta, A., & Μangoulia, P. (2024) · Healthcare · doi:10.3390/healthcare12242522 · Cited by 20 · see citing works
Cheng, W. L. S., Tang, A. C. Y., & Siu, K. L.-S. (2024) · Applied Nursing Research · doi:10.1016/j.apnr.2024.151861 · Cited by 16 · see citing works
Self-citationFeyzbabaie, M., Rajai, N., Alizadeh, A., & Azizi, M. (2025) · BMC Psychology · doi:10.1186/s40359-025-02562-x · Cited by 9 · see citing works
ABARIBE, C. E., Uduhirinwa, C., & ONUIRI, A. B. (2025) · BMC Nursing · doi:10.1186/s12912-025-03374-5 · Cited by 8 · see citing works
Smith, G. D., Watson, R. A., Poon, S., Cross, W. M., Hutchison, M. L., Jacob, E. R., Jacob, M. A., Rahman, M. A., Penny, K. I., & Lam, L. (2025) · Nurse Education in Practice · doi:10.1016/j.nepr.2025.104331 · Cited by 8 · see citing works
Matsuura, Y., Tran, N. H., & Yasui, T. (2024) · Women · doi:10.3390/women4030019 · Cited by 6 · see citing works
Lee, Y. H., Jang, S. J., & Lee, H. (2025) · Asian Nursing Research · doi:10.1016/j.anr.2025.08.005 · Cited by 6 · see citing works
Ko, K. Y., Montayre, J., Chiu, P. L., Lai, T. K. H., Chan, K., & Chan, H. H. T. (2025) · International Journal of Nursing Studies Advances · doi:10.1016/j.ijnsa.2025.100435 · Cited by 4 · see citing works
Özdemir, N. G., Dalcalı, B. K., & Berşe, S. (2025) · BMC Medical Education · doi:10.1186/s12909-025-08079-6 · Cited by 6 · see citing works
Perceived Stress Profiles Among Italian University Students: A Multivariate Approach
Micheluzzi, V., Sandri, E., Marchetti, A., Benedictis, A. D., Petrucci, G., Alvaro, R., Marinis, M. G. D., & Piredda, M. (2025) · Healthcare · doi:10.3390/healthcare13222830 · Cited by 3 · see citing works
Ridad, G. S., Angintaopan, H., Ayunan, P. H. M., & Manalocon, S. (2024) · Nurse Media Journal of Nursing · doi:10.14710/nmjn.v14i1.53987 · Cited by 3 · see citing works
Şık, T., Günüşen, N., & Serçe Yüksel, Ö. (2026) · Nurse Education Today · doi:10.1016/j.nedt.2026.107021 · Cited by 2 · see citing works
Ethical and equity challenges in employment: Perspectives of international nursing graduates
Ghimire, A., & Qiu, Y. (2025) · Nursing Ethics · doi:10.1177/09697330251333397 · Cited by 2 · see citing works
Pleșea-Condratovici, C., Dionisie, V., Moroianu, L.-A., Serban, P. S., Plesea-Condratovici, V., & Arbune, M. (2025) · Healthcare · doi:10.3390/healthcare13233118 · Cited by 2 · see citing works
Şık, T., Günüşen, N., & Serçe Yüksel, Ö. (2025) · BMC Psychology · doi:10.1186/s40359-025-03455-9 · Cited by 1 · see citing works
Are child field student nurses psychologically prepared for their first-year clinical placements?
Couzens, C., & Osewa, A. (2025) · British Journal of Nursing · doi:10.12968/bjon.2024.0218 · Cited by 1 · see citing works
Working Student Nurses: A Husserlian Phenomenology of Study-Work Balance
Sebullen, M. T., & BANTALI, J. B. (2025) · Journal of interdisciplinary perspectives · doi:10.69569/jip.2025.531 · Cited by 1 · see citing works
Lian, X., Zhang, Y., Xu, M., Li, X., Li, G., Wang, X., Qin, S., Ye, J., & Liu, C. (2025) · Frontiers in Psychiatry · doi:10.3389/fpsyt.2025.1613052 · Cited by 1 · see citing works
Perceived stress and academic burnout among Chinese higher vocational students
Hu, F., Yaacob, N. R. N., & Zhang, F. (2026) · Journal of International Students · doi:10.32674/1rhza525 · Cited by 1 · see citing works
Prevalence of stress and associated factors among nursing students in Limpopo province, South Africa
Mangale, N., Mbada, A. P., Mothoa, M. N., Rampedi, M. V., & Ntho, T. A. (2026) · Curationis · doi:10.4102/curationis.v49i1.2841 · Cited by 1 · see citing works
da Silva, A. N., & Vettore, M. (2023) · Annals of Dental Specialty · doi:10.51847/wfbbkhrmtb
Akter, T., Hasan, M. K., Khatun, M. N., & Rizwan, A. A. M. (2025) · World Journal of Nursing Research · doi:10.31586/wjnr.2025.1227
The Psychological Burden of Dental Education: Analyzing Stress and Burnout Factors
da Silva, A. N., & Vettore, M. (2024) · Annals Journal of Dental and Medical Assisting · doi:10.51847/xlw2na70wh
Ortíz, J. F. B., Gómez, M. E. N., García, A. J., & Nava, E. B. (2025) · PSICUMEX · doi:10.36793/psicumex.v15i1.759
Hemşirelik Öğrencilerinin Moral Distres ile Psikolojik Dayanıklılık Düzeyleri Arasındaki İlişki
Yiğitoğlu, G. T., BOZKURT, P. S., Yılmaz, H., & Korkmaz, A. (2025) · Hemşirelik Bilimi Dergisi · doi:10.54189/hbd.1605561
Xiong, Y., Ren, S., Lu, J., & Qiu, C. (2026) · Research Square · doi:10.21203/rs.3.rs-7841868/v1
Khan, S., Muhammad, D., Ali, S. B., Khan, H., Naz, N., Khanum, S., & Aslam, Z. (2026) · Pakistan BioMedical Journal · doi:10.54393/pbmj.v9i1.1326
Academic Help-Seeking Behavior in Nursing Students: A Scoping Review
Silverlight, B., Hicks, F. D., & Ruppar, T. M. (2026) · Journal of Nursing Education · doi:10.3928/01484834-20260406-01
Lima, B. S., de Moraes, A. C. F., da Silva, L. C. C., Neto, J. G. D. S., Sales, M. F., Oliveira, R. T. S., Gomes, E. R. D. S., Nogueira, L. R. B., Torres-Leal, F. L., Quaresma, F. R. P., et al. (2026) · Discover Food · doi:10.1007/s44187-026-01013-9
Navigating Academic Stress: Resilience and Psychological Well‐Being Among Future Nurses in Mongolia
Puntsag, O., Tsogbadrakh, B., Wichaikhum, O., & Stark, A. T. (2026) · Perspectives In Psychiatric Care · doi:10.1155/ppc/9910757
Lv, J., Wang, L., Lu, M.-L., Zhao, Y., Dong, J.-H., Zhang, L.-X., Wang, Y., & Lin, P.-M. (2026) · Frontiers in Psychology · doi:10.3389/fpsyg.2026.1865123
Metin, Z. G., Bozkurtaca, B., Tarim, Z., & TUNÇ, G. A. (2026) · Nursing Education Perspectives · doi:10.1097/01.nep.0000000000001594
- Authors
- Cheng, W. L. S., Chow, P. P. K., Wong, F. M. F., & Ho, M. M.
- Affiliations
- Saint Francis University (HK)
- Tung Wah College (HK)
- University of Hong Kong (HK)
- Corresponding author
- Cheng, Winnie Lai Sheung
- Venue
- Frontiers in Psychology
- Publisher
- Frontiers Media SA
- Published
- 2023-08-17
- Volume
- 14
- Pages
- 1234354-1234354
- ISSN
- 1664-1078 (ISSN-L)
- PMC
- PMC10469707
- OpenAlex
- W4385917653
- Cited by
- 34
- References
- 53
- Citations by year
- 2026: 10 · 2025: 16 · 2024: 6 · 2023: 2
- FWCI
- 16.46
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Frontiers in Psychology (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Social Sciences › Psychology › Developmental and Educational Psychology › Student Stress and Coping
- Health Sciences › Health Professions › General Health Professions › Healthcare professionals’ stress and burnout
- Social Sciences › Psychology › Social Psychology › Stress and Burnout Research
- Keywords
- nursing students, perceived stress, psychological distress, stressors, academic workload, coping strategies, part-time work, financial stress, learning environment, peer relationships, Hong Kong
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review