[PubMed].

U.S. National Library of Medicine National Institutes of Health Search: ( ("Endoscopy, Gastrointestinal"[Mesh] OR ("Endoscopy, Gastrointestinal/contraindications"[Mesh] OR "Endoscopy, Gastrointestinal/methods"[Mesh] OR "Endoscopy, Gastrointestinal/mortality"[Mesh] OR "Endoscopy, Gastrointestinal/standards"[Mesh] OR "Endoscopy, Gastrointestinal/statistics and numerical data"[Mesh] OR "Endoscopy, Gastrointestinal/trends"[Mesh] OR "Endoscopy, Gastrointestinal/utilization"[Mesh]) AND ("last 60 days"[EDat] AND "last 60 days"[PDat])) AND "2010/01/16 15.00"[MHDA]:"2010/01/23 15.00"[MHDA])