Wagner JD, Anthony MS, Cline JM. Soy phytoestrogens: research on benefits and risks. Clin Obstet Gynecol. 2001 Dec;44(4):843-52.
Pladevall M, Arana A, Varas-Lorenzo C. Systematic reviews and meta-analyses in ischemic cardiopathy. Cardiovasc Risk Fact. 2000;4:270-81.
Pladevall-Vila M, Arana A, Varas-Lorenzo C. Systematic reviews and meta-analysis on coronary heart disease. (Revisiones sistemáticas y meta-análisis en cardiopatía isquemica). Cardiovasc Risk Fact. 2000;4:270-81.
Johannes CB, Crawford SL, Longcope C, McKinley SM. Bleeding patterns and changes in the perimenopause: a longitudinal characterization of menstrual cycles. Clin Consultations Obstetr Gynecol. 1996;8:9-20.