TY - RPRT TI - Correlation of nocturnal increase in plasma oxytocin with a decrease in plasma estradiol/progesterone ratio in late pregnancy. AU - A R Fuchs AU - O Behrens AU - H C Liu PY - 1992 DO - 10.1016/0002-9378(92)91739-w UR - https://pubmed.ncbi.nlm.nih.gov/1471665/ ID - 1471665 ER -