Objective To observe the influence of serum anti-müllerian hormone (AMH) basal levels on ovulation induction.

Objective to investigate the effect of letrozole as a drug for ovulation induction in ovulatory infertile women and influence on reproductive hormones.

Since the etiology of PCOS is not clear, the present treatment is mainly to reduce body weight, induce ovulation, improve the insulin sensitivity, decrease androgen levels and or so.