title: Letter: Age and lower esophageal pressure.
mesh_terms: D000375:Aging; D000818:Animals; D004943:Esophagogastric Junction / Q000187:drug effects / Q000502:physiology*; D005755:Gastrins / Q000494:pharmacology; D006801:Humans; D008365:Manometry; D009130:Muscle, Smooth / Q000187:drug effects / Q000502:physiology*; D009893:Opossums; D010828:Physiology, Comparative
chemical_list: D005755:Gastrins