title: Positive occult blood and negative colonoscopy--should we perform gastroscopy?
authors.affiliation: University of British Columbia, Vancouver, Canada.
authors.forename: Mark T
authors.initials: MT
authors.lastname: McLoughlin
authors.forename: Jennifer J
authors.initials: JJ
authors.lastname: Telford
mesh_terms: D000328:Adult; D000368:Aged; D003113:Colonoscopy / Q000379:methods*; D015179:Colorectal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D005762:Gastroenterology / Q000379:methods*; D005767:Gastrointestinal Diseases / Q000175:diagnosis*; D005773:Gastroscopy / Q000379:methods* / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D008875:Middle Aged; D009780:Occult Blood; D011237:Predictive Value of Tests; D012306:Risk; D041742:Upper Gastrointestinal Tract