Is An Abnormal Doppler Umbilical Artery Waveform Ratio A Risk Factor for Poor Perinatal Outcome in the Non-Small for Gestational Age Fetus? - Yoon, Bo Hyun; 0h, Ig Hwan; Lee, Pyl Ryang; Kim, Woo Jin; Syn, Hee Chul; Kim, Syng Wook (American Journal of Perinatology, 1993)