The DOI matches its Crossref record; 264 of the 266 references it cites were found in a registry or an index.
A review of dietary phytochemicals and their relation to oxidative stress and human diseases
Abstract
Phytochemicals refer to active substances in plant-based diets. Phytochemicals found in for example fruits, vegetables, grains and seed oils are considered relatively safe for consumption due to mammal-plant co-evolution and adaptation. A number of human diseases are related to oxidative stress caused by for example chemical environmental contaminants in air, water and food; while also lifestyle including smoking and lack of exercise and dietary preferences are important factors for disease development in humans. Here we explore the dietary sources of antioxidant phytochemicals that have beneficial effects on oxidative stress, cardiovascular and neurological diseases as well as cancer. Plant-based diets usually contain phenolic acids, flavonoids and carotenoids, which have strong antioxidant properties, and therefore remove the excess of active oxygen in the body, and protect cells from damage, reducing the risk of cardiovascular and Alzheimer's disease. In most cases, obesity is related to diet and inactivity and plant-based diets change lipid composition and metabolism, which reduce obesity related hazards. Cruciferous and Allium vegetables are rich in organic sulphides that can act on the metabolism of carcinogens and therefore used as anti-cancer and suppressing agents while dietary fibres and plant sterols may improve intestinal health and prevent intestinal diseases. Thus, we recommend a diet rich in fruits, vegetables, and grains as its content of phytochemicals may have the potential to prevent or improve a broad sweep of various diseases.
Overview
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
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?
In the citing paper
“Overwhelming evidence has also highlighted the use of natural compounds with a strong antioxidant activity as a promising approach for the AD treatment (Guan et al., 2021; Walia et al., 2021)”
From Exploring the Therapeutic Potential of Phytochemicals in Alzheimer’s Disease: Focus on Polyphenols and Monoterpenes (2022) · cites this paper as Guan et al., 2021
Citations
Cites
1 retracted
Halawany, A. M. E., Sayed, N. S. E., Abdallah, H. M., & Dine, R. S. E. (2017) · Scientific Reports · doi:10.1038/s41598-017-02961-0 · Cited by 90
RetractedFree radicals and antioxidants in normal physiological functions and human disease
Valko, M., Leibfritz, D., Moncol, J., Cronin, M. T. D., Mazur, M., & Telser, J. (2007) · The International Journal of Biochemistry & Cell Biology · doi:10.1016/j.biocel.2006.07.001 · Cited by 14,269
Polyphenols: Food sources and bioavailability
Manach, C., Scalbert, A., Morand, C., Rémésy, C., & Jiménez, L. (2004) · The American Journal of Clinical Nutrition · doi:10.1093/ajcn/79.5.727 · Cited by 8,175
Free radicals, antioxidants and functional foods: impact on human health
Lobo, V, Patil, A., Phatak, A., & Chandra, N. (2010) · Pharmacognosy Reviews · doi:10.4103/0973-7847.70902 · Cited by 5,435
Chemistry and Biological Activities of Flavonoids: An Overview
Kumar, S., & Pandey, A. K. (2013) · The Scientific World JOURNAL · doi:10.1155/2013/162750 · Cited by 5,178
Biomass Recalcitrance: Engineering Plants and Enzymes for Biofuels Production
Himmel, M. E., Ding, S.-Y., Johnson, D. K., Adney, W. S., Nimlos, M. R., Brady, J. W., & Foust, T. D. (2007) · Science · doi:10.1126/science.1137016 · Cited by 4,538
Dietary antioxidant flavonoids and risk of coronary heart disease: the Zutphen Elderly Study
Hertog, M. G. L., Feskens, E. J. M., Kromhout, D., Hertog, M. G. L., Hollman, P. C. H., Hertog, M. G. L., & Katan, M. (1993) · The Lancet · doi:10.1016/0140-6736(93)92876-u · Cited by 4,336
Flavonoid antioxidants: chemistry, metabolism and structure-activity relationships
Heim, K. E., Tagliaferro, A. R., & Bobilya, D. J. (2002) · The Journal of Nutritional Biochemistry · doi:10.1016/s0955-2863(02)00208-5 · Cited by 4,261
Endothelial dysfunction in cardiovascular diseases: the role of oxidant stress
Cai, H., & Harrison, D. G. (2000) · Circulation Research · doi:10.1161/01.res.87.10.840 · Cited by 3,839
The role of antioxidants in the chemistry of oxidative stress: A review
Pisoschi, A. M., & Pop, A. (2015) · European Journal of Medicinal Chemistry · doi:10.1016/j.ejmech.2015.04.040 · Cited by 2,963
Flagged first, then by citations
2 of the 266 references couldn’t be matched to a known paper.
Research works printed but not linked: 8
- Balík, 2020, Beer and beer-based beverage contain lignans, J. Food Sci. Technol., 1–5
- Essa, 2012, Neuroprotective effect of natural products against Alzheimer’s disease, Neurochem. Res., 37, 1829, 10.1007/s11064-012-0799-9 · DOI · Paper page
- Haminiuk, 2012, Phenolic compounds in fruits–an overview, Int. J. Food Sci. Technol., 47, 2023, 10.1111/j.1365-2621.2012.03067.x · DOI · Paper page
- Kumar, 2013, Chemistry and biological activities of flavonoids: an overview, Sci. World J., 1
- Liu, 2004, Potential synergy of phytochemicals in cancer prevention: mechanism of action, Adv. Nutr., 134, 3479
- Liu, 2013, Health-promoting components of fruits and vegetables in the diet, Adv. Nutr., 4, 384S, 10.3945/an.112.003517 · DOI · Paper page
- Vermerris, 2008, Isolation and identification of phenolic compounds, Phenolic Compound Biochemistry, 151, 196
- Williams, 2011, Natural products as a source of Alzheimer’s drug leads, Nat. Prod. Rep., 28, 48, 10.1039/C0NP00027B · DOI · Paper page
Cited by
Sorted by citations
Items 101–168 of 168
Tirani, S. A., Balali, A., Kazemi, M., Askari, G., Khorvash, F., & Arab, A. (2024) · Scientific Reports · doi:10.1038/s41598-024-57536-7 · Cited by 4
Dietary phytochemical index and the risk of gallstone disease: a case-control study
Jebur, M. A., Ismaeel, G. L., Salim, H. M., Ahmed, A. H., & Naser, I. H. (2025) · BMC Gastroenterology · doi:10.1186/s12876-025-03622-7 · Cited by 4
Wang, J., Fang, L., Yu, J., Zhao, L., Yao, J., Li, H., & Chen, X. (2022) · Journal of Food Bioactives · doi:10.31665/jfb.2022.17303 · Cited by 4
Wu, B., Wang, Y., Zeng, L., Li, W., An, L., Li, J., Zhan, R., Kang, H., Liu, L., Lin, Y., et al. (2022) · BioMed Research International · doi:10.1155/2022/5752575 · Cited by 4
Parinandi, N. L., Liaugminas, A., Oliver, P. J., Varadharaj, S., Yenigalla, A., Elliott, A. C., Arutla, S., Campbell, S. J., Kotha, S. R., Sherwani, S. I., et al. (2023) · Cell Biochemistry and Biophysics · doi:10.1007/s12013-023-01128-1 · Cited by 4
A Age Related Vascular Senescence: Mystery of Blood-brain Barrier Dysfunction in Neurodegeneration
Behl, T., Jayabalan, K., Ballal, S., Sahoo, S., Chellammal, H. S. J., Gulati, M., Anand, K., Jha, S. K., & Gasmi, A. (2026) · Molecular Neurobiology · doi:10.1007/s12035-026-05984-9 · Cited by 3
Zare, M., Makhtoomi, M., Mansouri, F., Nouri, M., Sarbakhsh, P., Eftekhari, M. H., Gargari, B. P., & Shateri, Z. (2023) · BMC Sports Science Medicine and Rehabilitation · doi:10.1186/s13102-023-00748-7 · Cited by 5
Katsa, M. E., Gil, A. P. R., Makri, E.-M., Papadogiannis, S., Ioannidis, A., Kalliostra, M., Ketselidi, K., Diamantakos, P., Melliou, E., Magiatis, P., et al. (2024) · Food & Nutrition Research · doi:10.29219/fnr.v68.10882 · Cited by 3
The Action of Phytochemicals in the Control of Pathogenic Biofilms
Sousa, M., Gomes, I. B., Simões, L. C., Simões, M. V., & Ribeiro, M. (2022) · Springer series on biofilms · doi:10.1007/978-3-031-10992-8_15 · Cited by 3
Potential of nutraceuticals in celiac disease
Jahdkaran, M., Asri, N., Esmaily, H., & Rostami‐Nejad, M. (2024) · Tissue Barriers · doi:10.1080/21688370.2024.2374628 · Cited by 3
Bamidele, M. O., Alvarez-Pérez, O. B., Cortes, J. S., Flores-López, M. L., Chávez‐González, M. L., & Aguilar, C. N. (2024) · Research Square · doi:10.21203/rs.3.rs-4370220/v1 · Cited by 3
Asadi, S., Shiva, F., Mohtashamian, A., Fallah, M., Nouri-Majd, S., Aminianfar, A., & Asadi, S. (2024) · Scientific Reports · doi:10.1038/s41598-024-72602-w · Cited by 2
A New UHPLC-UV-MS Method for Detection and Identification of Bioactive Compounds
Zarth, A. T., & López, A. M. M. (2025) · Journal of AOAC International · doi:10.1093/jaoacint/qsaf039 · Cited by 2
Nasir, M., Gulzar, F., Jamil, S., Anjum, İ., Malik, A. R. A., Akhtar, S., & Ali, N. S. (2025) · Food Science & Nutrition · doi:10.1002/fsn3.70474 · Cited by 2
Issuriya, A., Sanpinit, S., Limsuwan, S., Goon, J. A., & Wetchakul, P. (2025) · Scientifica · doi:10.1155/sci5/9944914 · Cited by 2
Rodrigues, P. V., Massaut, K. B., Sigali, S. D. S., Bierhals, C. K., Pereira, E. D. S., Vitola, H. R. S., Vizzotto, M., Cruxen, C. E. D. S., da Silva, W. P., & Fiorentini, Â. M. (2026) · Journal of the Science of Food and Agriculture · doi:10.1002/jsfa.70655 · Cited by 2
Phytochemical and Bioactive Profile of Medicinal Plants Used Traditionally in Bosnia and Herzegovina
Ibragić, S., Mesinovic, A., Arnaut, S., Delic, E., Bešta‐Gajević, R., Dahija, S., Dizdar, M., & Karalija, E. (2024) · The Natural Products Journal · doi:10.2174/0122103155293731231230095516 · Cited by 3
Vadivu, R. S., Bakthavatchalam, S., Rani, V. G., Hirad, A. H., Wen, Z., Yuan, C., & Vinayagam, R. (2024) · Open Chemistry · doi:10.1515/chem-2024-0032 · Cited by 2
A Narrative Review of the Significance of Popular Diets in Diabetes Mellitus Management
Bayram, S. Ş. (2024) · Cureus · doi:10.7759/cureus.61045 · Cited by 3
Zouaoui, Z., Ennoury, A., Asri, S. E., Laabar, A., Kabach, I., Vinci, R. L., Cacciola, F., Mondello, L., Taghzouti, K., & Nhiri, M. (2024) · Food Bioscience · doi:10.1016/j.fbio.2024.105644 · Cited by 3
Tarko, A., Štochmaľová, A., Fabová, Z., Harrath, A. H., & Sirotkin, A. V. (2023) · Reproduction in Domestic Animals · doi:10.1111/rda.14355 · Cited by 2
Khan, M. R. U. Z., & Trivedi, V. (2023) · Pharmacognosy Research · doi:10.5530/pres.15.4.076 · Cited by 1
Felix, J. O., Nkwocha, C. C., & Michael, L. O. (2024) · Research Square · doi:10.21203/rs.3.rs-3996423/v1 · Cited by 2
Akinlade, F. A., SOBUKOLA, O. P., Adesola, A. A.-R., Bakare, A. H., & Omidiran, A. T. (2024) · Sustainable Food Technology · doi:10.1039/d3fb00204g · Cited by 1
The Role of Phytochemicals in The Management of Lifestyle Disorders
Adeyemi, M. M. (2024) · African Journal of Environment and Natural Science Research · doi:10.52589/ajensr-vjjy3s6c · Cited by 1
Understanding Nutrient Density in Foods: Profiles, Measures, and Features
Shaheen, N., Sultana, M., & Hasan, T. (2025) · Springer eBooks · doi:10.1007/978-3-031-32047-7_154-1 · Cited by 1
Zhu, Y., Zhang, K., Wen, S., & Zhang, Y. (2025) · Food Science & Nutrition · doi:10.1002/fsn3.71172 · Cited by 1
Rauf, M. A., Razzak, M. A., Waheed, F., Naz, T., Fatima, M., Ahmad, T., Arslan, M., Khan, U. M., & Sharif, M. K. (2026) · Bioactive Carbohydrates and Dietary Fibre · doi:10.1016/j.bcdf.2026.100526 · Cited by 2
Karageçili, H., Yerli̇kaya, E., Ertürk, A., Aslan, K., Akıncıoğlu, H., & Gülçın, İ. (2026) · Molecules · doi:10.3390/molecules31162931 · Cited by 1
Non-Dairy Probiotic Drinks: An Underutilized Alternative
Oyetayo, V. O. (2024) · Food Science & Nutrition Technology · doi:10.23880/fsnt-16000335 · Cited by 1
Sarwar, M., Irfan, H. M., Alamgeer, Jabbar, Z., Asim, M. H., Hassan, M. S., & Nawaz, S. (2025) · Molecular Diversity · doi:10.1007/s11030-025-11305-4 · Cited by 1
Hegmann, L., Sturm, S., Niegisch, G., Windolf, J., & Suschek, C. V. (2022) · Research Square · doi:10.21203/rs.3.rs-1869826/v1 · Cited by 1
Gallik Asit Saflaştırılması için PHEMA Temelli Polimerik Partiküllerin Sentezlenmesi
CEMEK, K., Anar, B. C., Zenger, O., & Baydemir, G. (2022) · Artıbilim Adana Alparslan Türkeş Bilim ve Teknoloji Üniversitesi Fen Bilimleri Dergisi · doi:10.55198/artibilimfen.1128003
Pattni, R., Kumarkhaniya, H., & Maitreya, B. (2023) · International Association of Biologicals and Computational Digest · doi:10.56588/iabcd.v2i1.128
Bezpalko, O. O., Machuskyy, O. V., Vygovska, L., Ushkalov, В., Radzihovsky, M. L., Ushkalov, А. V., & Данчук, В. В. (2023) · Naukovì dopovìdì Nacìonalʹnogo unìversitetu bìoresursiv ì prirodokoristuvannâ Ukraïni · doi:10.31548/dopovidi4(104).2023.007
The potential for black tea in combating arsenic toxicity
Roy, M., Ghosh, A., & Datta, A. (2024) · Tea in Health and Disease Prevention · doi:10.1016/b978-0-443-14158-4.00067-1
Molecular mechanisms of action of DIM and its clinical application
Никитина, Е. А., Орлова, С. В., Batysheva, T. T., Balashova, N. V., Alekseeva, М. V., Vodolazkaya, A. N., Prokopenko, E. V., & Magomedova, K. A. (2024) · Medical alphabet · doi:10.33667/2078-5631-2024-19-9-15
Introduction to Bioactive Phytochemicals in By-Products from Bulb, Flower, and Fruit Vegetables
Ramadan, M. F. (2025) · Springer eBooks · doi:10.1007/978-3-031-77399-0_1 · Cited by 1
Ramadan, M. F. (2025) · Springer eBooks · doi:10.1007/978-3-031-77399-0_13
Fisher, A., Villanueva, J., Simington, L., Jenkins, B. C., Travis, K., Roy, D., & Sengupta, B. (2025) · SSRN Electronic Journal · doi:10.2139/ssrn.5159699
de Souza, J. S., Reitz, L. K., Copetti, C. L. K., Moreno, Y. M. F., Vieira, F. G. K., & Pietro, P. F. D. (2025) · Nutrients · doi:10.3390/nu17061001
Analgesic and Anti-inflammatory Properties of Dendrobium nobile
Sarsaiya, S., Jain, A., Gong, Q., Wu, Q., & Shi, J. (2025) · CABI eBooks · doi:10.1079/9781800627987.0008
Cinnamic acid derivatives and cadmium toxicity: From composition and dosage to inhibitory mechanisms
Zhao, T., Duan, Y., Ren, M., & Liu, S. (2025) · Journal of Food Composition and Analysis · doi:10.1016/j.jfca.2025.107568
Erhuen, E., Ojo, A. A., Onasanya, A., & Adewole, E. (2025) · ABUAD International Journal of Natural and Applied Sciences · doi:10.53982/aijnas.2025.0501.02-j
Biotechnological Revolutions in Bakery Processing
Awasthi, R., Shreshtha, K., Barad, P., Mishra, B. N., & Verma, N. (2025) · Springer eBooks · doi:10.1007/978-3-031-96526-5_8 · Cited by 1
93Chapter 5 Molecular, biochemical, and metabolic approaches to functional foods
Yusuf, B. O., & Sabiu, S. (2025) · De Gruyter eBooks · doi:10.1515/9783111441238-006
Phytochemicals in Prevention and Management of Cardiovascular Disease
Chettupalli, A. K., Sisodia, A., Rahaman, S. A., Bukke, S. P. N., & Boggula, N. (2025) · Springer eBooks · doi:10.1007/978-3-032-01356-9_5
Głód, B. K., Borkowski, M., Marciniuk, J., & Marciniuk, P. (2025) · Molecules · doi:10.3390/molecules30224405
Antioxidant phytochemicals protecting against oxidative stress and chronic diseases
Dubey, S., Shah, K., Madhyastha, H., Gupta, S. M., Yadav, H., Singh, R., Dixit, A. K., & Chauhan, N. S. (2025) · Elsevier eBooks · doi:10.1016/b978-0-443-26494-8.00009-4
Kovačić, A., Masuero, D., Garcia‐Aloy, M., Mancini, A., & Vrhovšek, U. (2026) · Food Chemistry Advances · doi:10.1016/j.focha.2026.101231
Zambak, F., Sen, İ., Zengin, G., Acioglu, L. K., Yeşilyurt, İ., Turna, E., & Çakmak, Y. S. (2026) · Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology · doi:10.1007/s44473-025-00063-8
Anti-Obesity Effect of Probiotic Carrot Nectar Incorporated with L. Plantarum MCC5231
Goel, A., Khan, M. T., Muthukumar, S., Chauhan, A. S., Tamang, J. P., & Halami, P. M. (2026) · Probiotics and Antimicrobial Proteins · doi:10.1007/s12602-025-10902-x
The Theoretical Intersection of Plant-Based Diets, Alzheimer’s, and Cardiovascular Disease
VanCleef, T. R., & Jones, E. J. (2026) · Biological Research For Nursing · doi:10.1177/10998004261439115
Kolobe, S. D., Malematja, E., Ng’ambi, J. W., & Mabelebele, M. (2026) · Agricultural sciences. · doi:10.5772/intechopen.1013610
Bicca, B. B., Massaut, K. B., Pereira, E. D. S., Vizzotto, M., Fonseca, L. M., Fiorentini, Â. M., & Lopes, G. V. (2026) · Journal of the Science of Food and Agriculture · doi:10.1002/jsfa.70708
Phytochemicals: nurturing antioxidant, antifungal, and antiinflammatory supply
Heydari, P. (2026) · Elsevier eBooks · doi:10.1016/b978-0-443-32888-6.00015-3
Phytochemicals in the prevention and treatment of cardiovascular diseases
Boshtam, M., Abedpoor, N., & Hajibabaie, F. (2026) · Elsevier eBooks · doi:10.1016/b978-0-443-32888-6.00005-0
Effect of a Vegetarian Diet on Cardiovascular Diseases
Chen, J., Shi, R., & Zheng, J. (2026) · Royal Society of Chemistry eBooks · doi:10.1039/9781837678907-00232
The Structure of Plant-based Diets and Their Relationship with Health
Baroni, L., & Rizzo, G. (2026) · Royal Society of Chemistry eBooks · doi:10.1039/9781837678907-00140
Bioactive Phytochemicals of Plant-based Diets for Metabolic Syndrome
Singh, R. B., Jankajová, M., Pella, D., Fatima, G., Smail, M. A. M., Žeňuch, P., Žeňuchová, Z., Peter, K., Fedačko, J., Shoganova, L., et al. (2026) · Royal Society of Chemistry eBooks · doi:10.1039/9781837678907-00339
Protein Deficiency: Does It Exist?
Johansson, G. (2026) · IntechOpen eBooks · doi:10.5772/intechopen.1015726
Zhong, H.-R., Lu, Y., Zhou, H., Hu, X.-J., Li, W., Chen, S.-B., Yang, S., Yang, H.-Y., & Yao, Y.-F. (2026) · Journal of Food Biochemistry · doi:10.1155/jfbc/5550240
From antioxidant to signal modulator: The expanding role of quercetin in human health
Kumar, A., Sood, N., Thakur, R., Singh, N., Kalyan, R., Patel, P., & Kurmi, B. D. (2026) · Pharmacological Research - Natural Products · doi:10.1016/j.prenap.2026.100836
Associations of plant-based diet index with sleep quality and salivary oxidative stress markers
Atabılen, B., Bayazıt, A. D., Yılmaz, C., Akdevelıoğlu, Y., Yıldızay, A., Takak, D., & Arslan, Z. (2026) · Nutrition & Food Science · doi:10.1108/nfs-03-2026-0110
Schmidt, S., Fisk, I. D., Yang, N., Saarela, M., & Hessel, V. (2026) · Comprehensive Reviews in Food Science and Food Safety · doi:10.1111/1541-4337.70598
Hyder, A., Arain, M. B., Memon, A. A., & Soylak, M. (2026) · Food Analytical Methods · doi:10.1007/s12161-026-03241-2
Comparison of dietary phytochemical intake in adults using different assessment methods
Demir, A., Kahve, A. N., & Bayrak, E. (2026) · Food and Health · doi:10.3153/fh26025
Metadata
- Authors
- Guan, R., Van Le, Q., Yang, H., Zhang, D., Gu, H., Yang, Y., Sonne, C., Lam, S. S., Zhong, J., Jianguang, Z., Liu, R., & Peng, W.
- Affiliations
- Henan Agricultural University (CN)
- Aarhus University (DK)
- Universiti Malaysia Terengganu (MY)
- Henan Medical University (CN)
- Henan University of Chinese Medicine (CN)
- Henan Institute of Science and Technology (CN)
- Corresponding author
- Sonne, Christian
- Peng, Wanxi
- ORCID
- Venue
- Chemosphere
- Publisher
- Elsevier BV
- Published
- 2021-05
- Volume
- 271
- Pages
- 129499
- ISSN
- 0045-6535 (ISSN-L)
- OpenAlex
- W3121099329
- Cited by
- 169
- References
- 266
- Citations by year
- 2026: 22 · 2025: 37 · 2024: 41 · 2023: 35 · 2022: 23 · 2021: 11
- FWCI
- 14.83
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Chemosphere (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Henan University (21IRTSTHN020)
- Topics
- Health Sciences › Medicine › Biochemistry (medical) › Phytochemicals and Antioxidant Activities
- Health Sciences › Medicine › Biochemistry (medical) › Antioxidant Activity and Oxidative Stress
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
- Keywords
- dietary phytochemicals, oxidative stress, antioxidants, plant-based diet, phenolic acids, flavonoids, carotenoids, cardiovascular disease, Alzheimer's disease, cancer prevention, obesity, cruciferous vegetables, Allium vegetables, organosulfur compounds, dietary fiber, phytosterols, gut health, environmental pollutants, lifestyle factors
- MeSH terms
- Animals, Antioxidants, Diet, Fruit, Humans, Vegetables, Oxidative Stress, Phytochemicals
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