Unconjugated estradiol, estriol and total estriol in maternal peripheral vein, cord vein, and cord artery serum at delivery in pregnancies with intrauterine growth retardation - Tayama,C.; Ichimaru,S.; Ito,M.; Nakayana,M.; Maeyama,M.; Miyakawa,I. (Endocrinol Jpn, 1983)