TY - JOUR AU - Geipel, A; Berg, C; Germer, U TI - Doppler assessment of the uterine circulation in the second trimester in twin pregnancies: prediction of pre-eclampsia, fetal growth restriction and birth weight discordance JO - Ultrasound Obstet Gynecol VL - 20 PY - 2002 DO - 10.1046/j.1469-0705.2002.00866.x L3 - PubMed-ID: 12493041 SP - 541 EP - 545 N1 - et al. ER -