title: Letter: "What is physiological?" an answer.
mesh_terms: D000818:Animals; D004943:Esophagogastric Junction / Q000502:physiology; D005755:Gastrins / Q000502:physiology*; D005764:Gastroesophageal Reflux / Q000517:prevention & control; D012107:Research Design
chemical_list: D005755:Gastrins