Active and passive opening of the cardia and its relation to the pathogenesis of hiatus hernia.
D000818:Animals; D002299:Cardia; D004285:Dogs; D004941:Esophagitis / Q000150:complications*; D005764:Gastroesophageal Reflux / Q000150:complications; D006548:Hernia, Diaphragmatic / Q000209:etiology*; D006801:Humans; D011817:Rabbits; D014839:Vomiting