作者单位:Department of Obstetrics Copenhagen University Hospital - Rigshospitalet[1]Department of Obstetrics & Gynecology Copenhagen University Hospital – Amager and Hvidovre Hospital[2]Fertility Clinic Juliane Marie Center for Women Children and Reproduction Copenhagen University[3]Department of Obstetrics & Gynecology Copenhagen University Hospital – Herlev and Gentofte[4]Faculty of Health Sciences Copenhagen University[5]Department of Clinical Biochemistry Copenhagen University Hospital – Rigshospitalet[6]