Does a human chorionic gonadotropin level of over 20,000 IU/L four weeks after uterine evacuation for complete hydatidiform mole constitute an indication for chemotherapy for gestational trophoblastic neoplasia? - Braga, A; Biscaro, A; do, Amaral Giordani JM; Viggiano, M; Elias, KM; Berkowitz, RS; Seckl, MJ (EUROPEAN JOURNAL OF OBSTETRICS & GYNECOLOGY AND REPRODUCTIVE BIOLOGY, 2018)