1Smith-Warner, D. Spiegelman, S-S. Yaun. Intake of fruits and vegetables and risk of breast cancer SA [J]. Journal of the American Medical Association, 2001, 285:769--776.
2Coleman D L, Leiter E H, Schweizer R W. Therapeutic effects of dehydroepiandrosterone (DHEA) in diabetic mice[J]. Diabetes, 1982, 31:830--33.
3E. Fernandez, A. Schatzkin, et al. Diet diversity and colorectal cancer[J]. Preventive Medicine., 2000, 31:11--14.