Atropine, bethanechol, and esophageal motility.
D001285:Atropine / Q000494:pharmacology*; D018723:Bethanechol; D001626:Bethanechol Compounds / Q000494:pharmacology*; D004947:Esophagus / Q000187:drug effects* / Q000502:physiology; D006801:Humans
D001626:Bethanechol Compounds; D018723:Bethanechol; D001285:Atropine