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Cho, Eunyoung, Walter C. Willett, Graham A. Colditz, Charles S. Fuchs, Kana Wu, Andrew T. Chan, Steven H. Zeisel, och Edward L. Giovannucci. Dietary Choline and Betaine and the Risk of Distal Colorectal Adenoma in Women. 2007.

Cho, Eunyoung, et al. Dietary Choline and Betaine and the Risk of Distal Colorectal Adenoma in Women. 2007.