1. Vital Statistics of the United States 1990, Vol.II, Mortality, U.S. Department of health and human services. Hyattsville, Maryland, 1994.
2. Stampfer MJ, Colditz GA, Willet WC. Menopause and heart disease. Ann. NY Acad Sci 1990; 592:193..203; discussion 257–262.
3. Gura T. Estrogen: key player in heart disease among women. Science 1995; 269,771773.
4. Weiner CP, Lizasoain I, Baylis SA, Knowles RG, Charles IG, Moncada S. Induction of calcium-dependent nitric-oxide synthases by sex-hormones. Proc Natl Acad Sci 1994; 91:5212–5216.
5. Hishikawa K, Nakaki T, Marumo T, Suzuki H, Kato R, Saruta T. Up-regulation of nitric-oxide synthase by estradiol in human aortic endothelial-cells. FEBS Lett 1995; 360:291293.