1. The prevalence and features of the polycystic ovary syndrome in an unselected population;Azziz;J Clin Endocrinol Metab,2004
2. A prospective study of the prevalence of the polycystic ovary syndrome in unselected Caucasian women from Spain;Asunción;J Clin Endocrinol Metab,2000
3. Prevalence of the polycystic ovary syndrome in unselected black and white women of the southeastern United States: a prospective study;Knochenhauer;J Clin Endocrinol Metab,1998
4. Amenorrhoea associated with bilateral polycstic ovaries;Stein;Am J Obstet Gynecol,1935
5. Stein and Leventhal: 80 years on;Azziz;Am J Obstet Gynecol,2016