RUEY-JIEN CHENChu C.T.2020-02-192020-02-1919910255-6596https://scholars.lib.ntu.edu.tw/handle/123456789/460852Effect of fetal sex on maternal and fetal human chorionic gonadotropin levels and comparison of their levels in paired umbilical arteries and veins.journal article19468112-s2.0-0026114953