title: Letter: colorectal cancer screening--author's reply.
authors.forename: C
authors.initials: C
authors.lastname: Hassan
mesh_terms: D015179:Colorectal Neoplasms / Q000175:diagnosis*; D055088:Early Detection of Cancer / Q000592:standards*; D016099:Endoscopy, Gastrointestinal / Q000379:methods*; D006801:Humans; D009369:Neoplasms / Q000175:diagnosis*