Emergency upper gastrointestinal endoscopy: does haste make waste?
D000208:Acute Disease; D002641:Chicago; D004630:Emergencies; D004724:Endoscopy / Q000009:adverse effects; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis* / Q000401:mortality; D005773:Gastroscopy / Q000009:adverse effects; D006801:Humans; D007902:Length of Stay; D012189:Retrospective Studies; D013997:Time Factors