1. Zawadzki JK, Dunaif A. Diagnostic criteria for polycystic ovary syndrome: toward a rational approach. In: Dunaif A, Givens JR, Haseline F, Merriam GR, eds. Polycystic Ovary Syndrome. Boston: Blackwell Scientific; 1990;377-384.
2. Kauffman RP, Baker VM, DiMarino P, et al. Polycystic ovarian syndrome and insulin resistance in white and Mexican American women: a comparison of two distinct populations. Am J Obstet Gynecol. 2002;187:1362-1369.
3. Chang RJ, Nakamura RM, Judd HL, Kaplan SA. Insulin resistance in nonobese patients with polycystic ovarian disease. J Clin Endocrinol Metab. 1983;57:356-359.
4. Legro RS, Finegood D, Dunaif A. A fasting glucose to insulin ratio is a useful measure of insulin sensitivity in women with polycystic ovary syndrome. J Clin Endocrinol Metab. 1998;83:2694-2698.
5. Goke B. Type II diabetes: Are current treatment options sufficient? Exp Clin Endocrinol Diabetes. 2000;108:S243-S249.
6. Stumvoll M, Nurjhan N, Perriello G, Dailey G, Gerich JE. Metabolic effects of metformin in non-insulin-dependent diabetes mellitus. N Engl J Med. 1995;333:550-554.
7. Velazquez EM, Mendoza S, Hamer T, Sosa F, Glueck CJ. Metformin therapy in polycystic ovary syndrome reduces hyperinsulinemia, insulin resistance, hyperan-drogenemia, and systolic blood pressure, while facilitating normal menses and pregnancy. Metabolism. 1994;43:647-654.
8. Velazquez EM, Acosta A, Mendoza SG. Menstrual cyclicity after metformin therapy in polycystic ovary syndrome. Obstet Gynecol. 1997;90:392-395.
9. Morin-Papunen LC, Koivunen RM, Ruokonen A, Martikainen HK. Metformin therapy improves the menstrual pattern with minimal endocrine and metabolic effects in women with polycystic ovary syndrome. Fertil Steril. 1998;69:691-696.
10. Glueck CJ, Wang P, Fontaine R, Tracy T, Sieve-Smith L. Metformin-induced resumption of normal menses in 39 of 43 (91%) previously amenorrheic women with the polycystic ovary syndrome. Metabolism. 1999;48:511-519.
11. Sarlis NJ, Weil SJ, Nelson LM. Administration of metformin to a diabetic woman with extreme hyperandrogenemia of nontumoral origin: management of infertility and prevention of inadvertent masculinization of a female fetus. J Clin Endocrinol Metab. 1999;84:1510-1512.
12. Ibanez L, Valls C, Potau N, Marcos MV, de Zegher F. Sensitization to insulin in adolescent girls to normalize hirsutism, hyperandrogenism, oligomenorrhea, dys-lipidemia, and hyperinsulinism after precocious puberty. J Clin Endocrinol Metab. 2000;85:3526-3530.
13. Kolodziejczyk B, Duleba AJ, Spaczynski RZ, Pawelczyk L. Metformin therapy decreases hyperandrogenism and hyperinsulinemia in women with polycystic ovary syndrome. Fertil Steril. 2000;73:1149-1154.
14. Moghetti P, Castello R, Negri C, et al. Metformin effects on clinical features, endocrine and metabolic profiles, and insulin sensitivity in polycystic ovary syndrome: a randomized, double-blinded, placebo-controlled 6-month trial, followed by open, long-term clinical evaluation. J Clin Endocrinol Metab. 2000;85:139-146.
15. Pasquali R, Gambineri A, Biscotti D, et al. Effect of long-term treatment of met-formin added to hypocaloric diet on body composition, fat distribution, and androgen and insulin levels in abdominally obese women with and without the polycystic ovary syndrome. J Clin Endocrinol Metab. 2000;85:2767-2774.
16. Seale FG, Robinson RD, Neal GS. Association of metformin and pregnancy in the polycystic ovary syndrome. A report of three cases. J Reprod Med. 2000;45:507-510
17. Crave JC, Fimbel S, Lejeune H, Cugnardey N, Dechaud H, Pugeat M. Effects of diet and metformin administration on sex hormone-binding globulin, androgens, and insulin in hirsute and obese women. J Clin Endocrinol Metab. 1995;80:2057-2062.
18. Acbay O, Gundogdu S. Can metformin reduce insulin resistance in polycystic ovary syndrome? Fertil Steril. 1996;65:946-949.
19. Ehrmann DA, Cavaghan MK, Imperial J, Sturis J, Rosenfield RL, Polonsky KS. Effects of metformin on insulin secretion, insulin action, and ovarian steroidogen-esis in women with polycystic ovary syndrome. J Clin Endocrinol Metab. 1997;82:524-530.
20. Olefsky JM. Treatment of insulin resistance with peroxisome proliferator-activated receptor [gamma] agonists. J Clin Invest. 2000;106:467-472.
21. Ghazeeri G, Kutteh WH, Bryer-Ash M, et al. Effect of rosiglitazone on spontaneous and clomiphene citrate-induced ovulation in women with polycystic ovary syndrome. Fertil Steril. 2003;79:562-566.
22. Shobokshi A, Shaarawy M. Correction of insulin resistance and hyperandrogenism in polycystic ovary syndrome by combined rosiglitazone and clomiphene citrate therapy. J Soc Gynecol Investig. 2003;10:99-104.
23. Huber-Buchholz MM, Carey DG, Norman RJ. Restoration of reproductive potential by lifestyle modification in obese polycystic ovary syndrome: role of insulin sensitivity and luteinizing hormone. J Clin Endocrinol Metab. 1999;84:1470-1474.
24. Lobo RA, Gysler M, March CM, Goebelsmann U, Mishell DR. Clinical and laboratory predictors of clomiphene response. Fertil Steril. 1982;37:168-174.
25. Imani B, Eijkemans MJC, te Velde ER, Habbema JDF, Fauser BCJM. Predictors of patients remaining anovulatory during clomiphene citrate induction of ovulation in normogonadotropic oligomenorrheic infertility. J Clin Endocrinol Metab. 1998;83:2361-2366.
26. Shepard MK, Balmaceda JP, Leija CG. Relationship of weight to successful induction of ovulation with clomiphene citrate. Fertil Steril. 1979;32:641-645.
27. Nestler JE, Jakubowicz DJ, Evans WS, Pasquali R. Effects of metformin on spontaneous and clomiphene-induced ovulation in the polycystic ovary syndrome. N Engl J Med. 1998;1876-1880.
28. Vandermolen DT, Ratts VS, Evans WS, Stovall DW, Kauma SW, Nestler JE. Metformin increases the ovulatory rate and pregnancy rate from clomiphene cit-rate in patients with polycystic ovary syndrome who are resistant to clomiphene citrate alone. Fertil Steril. 2001;75:310-315.
29. Moghetti P, Tosi F, Tosti A, et al. Comparison of spironolactone, flutamide, and finasteride efficacy in the treatment of hirsutism: a randomized, double-blind, placebo-controlled trial. J Clin Endocrinol Metab. 2000;85(1):89-94.
30. Vaniqua [package insert]. New York: Bristol-Myers Squibb; 2000.