Young Ho YANG ; Hyung Min CHOI ; Sei Kwang KIM ; He Ree SUNG ; In Kyu KIM
Korean Journal of Obstetrics and Gynecology 1992;35(2):213-219
No abstract available. alpha-Fetoproteins* ; Chorion* ; Chorionic Gonadotropin* ; Female ; Humans ; Pregnancy ; Pregnancy Trimester, First*