title: Atrial fibrillation during flexible sigmoidoscopy in a 36-year-old man.
mesh_terms: D000328:Adult; D001281:Atrial Fibrillation / Q000209:etiology*; D015179:Colorectal Neoplasms / Q000175:diagnosis; D006801:Humans; D008297:Male; D012812:Sigmoidoscopy / Q000009:adverse effects*