[1] Taiwan IVF Grp Ctr, Dept Infertil & Reprod Med, Hsinchu, Taiwan
[2] Ton Yen Gen Hosp, Dept Fertil & Reprod Med, Hsinchu, Taiwan
[3] Chinese Univ Hong Kong, Assisted Reprod Technol Unit, Dept Obstet & Gynaecol, Fac Med,Shatin, Hong Kong, Peoples R China
[4] Mackay Mem Hosp, Dept Surg, Hsinchu, Taiwan