作者单位:My Duc Hosp, IVFMD, Ho Chi Minh City, Vietnam[1]Skive Reg Hosp, Fertil Clin, Skive, Denmark[2]Univ Med & Pharm Ho Chi Minh City, Dept Obstet & Gynecol, 217 Hong Bang St,Dist 5, Ho Chi Minh City, Vietnam[3]Copenhagen Univ Hosp, Lab Reprod Biol, Copenhagen, Denmark[4]