title: Cost benefit of out of hours endoscopy: the options.
authors.forename: Tim
authors.initials: T
authors.lastname: Heymann
mesh_terms: D039602:After-Hours Care / Q000191:economics; D003362:Cost-Benefit Analysis; D042241:Early Diagnosis; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D005773:Gastroscopy / Q000191:economics; D006801:Humans; D008131:London