[1] Tri Serv Gen Hosp, Natl Def Med Ctr, Dept Obstet & Gynecol, Taipei, Taiwan
[2] Natl Taiwan Univ, Natl Taiwan Univ Hosp, Coll Med, Dept Obstet & Gynecol, Taipei, Taiwan
[3] China Med Univ Hosp, Dept Obstet & Gynecol, Taichung, Taiwan
[4] China Med Univ, Sch Med, Dept Pediat, Taichung, Taiwan
[5] Chang Gung Mem Hosp, Dept Obstet & Gynecol, Linkou, Taiwan
[6] Chang Gung Univ, Coll Med, Taoyuan, Taiwan
[7] Natl Tsing Hua Univ, Sch Med, Hsinchu, Taiwan
[8] Taipei Vet Gen Hosp, Dept Obstet & Gynecol, Taipei, Taiwan
[9] Natl Yang Ming Chiao Tung Univ, Inst Clin Med, Sch Med, Taipei, Taiwan
[10] Cathay Gen Hosp, Assisted Reprod Ctr, Dept Obstet & Gynecol, Taipei, Taiwan
[11] Fu Jen Catholic Univ, Sch Med, Dept Med, New Taipei City, Taiwan
[12] Chang Gung Mem Hosp, Dept Obstet & Gynecol, Kaohsiung, Taiwan
[13] Natl Cheng Kung Univ, Natl Cheng Kung Univ Hosp, Coll Med, Dept Obstet & Gynecol, Tainan, Taiwan
[14] Superintendent Kuo Gen Hosp, Tainan, Taiwan
[15] Chi Mei Med Ctr, Dept Obstet & Gynecol, Tainan, Taiwan
[16] Natl Chung Hsing Univ, Dept Postbaccalaureate Med, Taichung, Taiwan
[17] Tungs Taichung Metroharbor Hosp, Dept Obstet & Gynecol, Taichung, Taiwan
[18] Far Eastern Mem Hosp, Dept Obstet & Gynecol, New Taipei City, Taiwan