1. Estrogen replacement therapy;Sarrel;Obstet Gynecol,1988
2. Population estimates taken from Table no. 13, in Statistical Abstract of the United States: 1991;US Bureau of the Census,1991
3. Menopause, developing countries and the 21st century;Diczfalusy;Acta Obstet Gynecol Scand,1986
4. Uncertainty about postmenopausal estrogen;Goldman;N Engl J Med,1991
5. Plasma lipids and lipoproteins and the prevalence of risk for coronary heart disease in Canadian adults;Connelly,1992