RT Journal Article SR Electronic T1 Transfer of beta blocking drugs from the amniotic fluid to the fetal and maternal circulation. JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 641 OP 649 VO 207 IS 2 A1 G R Van Petten A1 G J Mears A1 H J Mathison YR 1978 UL http://jpet.aspetjournals.org/content/207/2/641.abstract AB