TY - GEN ED - WHO Scientific Group on Gestational Trophoblastic Diseases ED - World Health Organization , TI - Gestational trophoblastic diseases: report SN - 9241206926 U1 - 616.9 23 PY - 1983/// CY - Geneva PB - World Health Organization KW - Trophoblastic tumors KW - Uterus KW - Tumors ER -