Elta, Grace H Efficiency in endoscopy with improvements in instrumentation. [electronic resource] - Gastrointestinal endoscopy clinics of North America Oct 2004 - 673-8, viii p. digital Publication Type: Journal Article ISSN: 1052-5157 Standard No.: 10.1016/j.giec.2004.05.004 doi Subjects--Topical Terms: Efficiency, OrganizationalEndoscopes, Gastrointestinal--standardsEndoscopy, Digestive System--instrumentationHumans