title: [Not Available].
authors.forename: U G
authors.initials: UG
authors.lastname: Pfeifer
mesh_terms: D016099:Endoscopy, Gastrointestinal / Q000706:statistics & numerical data* / Q000639:trends*; D005767:Gastrointestinal Diseases / Q000175:diagnosis* / Q000453:epidemiology / Q000601:surgery*; D005858:Germany; D019538:Health Care Surveys; D006801:Humans; D010818:Practice Patterns, Physicians' / Q000706:statistics & numerical data* / Q000639:trends*; D014600:Utilization Review