Greenberg, E. Robert

Folic Acid for the Prevention of Colorectal Adenomas: A Randomized Clinical Trial

Cole, B. F., Baron, J. A., Sandler, R. S., Haile, R. W., Ahnen, D. J., Bresalier, R. S., McKeown-Eyssen, G., Summers, R. W., Rothstein, R. I., Burke, C. A., et al. (2007) · JAMA

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A Clinical Trial of Beta Carotene to Prevent Basal-Cell and Squamous-Cell Cancers of the Skin

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