Ethinylestradiol Completed Phase N/A Trials for The Investigators Collected 534 PCOS Patients as the Case Group,and 580 Infertile Women With Normal Ovulatory Cycle of the Control Group / 534 Patients in the Cases Group and 580 Women in the Control Group Received no Measures, While 579 Patients Received Drugs / The Investigators Monitored Basic Indexes in Blood of All the Subjects in This Suvey,and Also Monitored Indexes of 579 Patients After Treatment / At the Same Time, the Investigators Continuedly Collect Cases to October 2012, and Totally Collected 579 Patients With PCOS Altogether