机构:
Sichuan Acad Med Sci, Dept Obstet & Gynecol, Chengdu, Sichuan, Peoples R China
Sichuan Prov Peoples Hosp, 32 West Second Sect First Ring Rd, Chengdu, Sichuan, Peoples R ChinaSichuan Acad Med Sci, Dept Obstet & Gynecol, Chengdu, Sichuan, Peoples R China