title: [Endoscopic procedures performed by peroral approach in the Department of Endoscopy of the Hospital de San Juan de Dios from May 1956 to July 1960].
mesh_terms: D001699:Biometry; D004724:Endoscopy / Q000706:statistics & numerical data*; D005767:Gastrointestinal Diseases; D006761:Hospitals; D006801:Humans
keywords: ENDOSCOPY/statistics