[1] Anhui Med Univ, Reprod Med Ctr, Dept Obstet & Gynecol, Affiliated Hosp 1, 218 Ji Xi Rd, He Fei 230022, Anhui, Peoples R China
[2] Anhui Med Univ, Sch Nursing, 81 Mei Shan Rd, He Fei 230032, Anhui, Peoples R China
[3] Anhui Med Univ, Teaching Ctr Prevent Med, Sch Publ Hlth, 81,Meishan Rd, Hefei 230032, Peoples R China
[4] NHC Key Lab Study Abnormal Gametes & Reprod Tract, 81 Meishan Rd, Hefei 230032, Anhui, Peoples R China
[5] Anhui Med Univ, Key Lab Populat Hlth Life Cycle, Minist Educ, 81 Meishan Rd, Hefei 230032, Anhui, Peoples R China
[6] Anhui Med Univ, Affiliated Hosp 1, 218 Ji Xi Rd, He Fei 230022, Anhui, Peoples R China