title: Reply to Matsushita.
authors: C W
authors: CW
authors: Yang
authors: H H
authors: HH
authors: Yen
mesh_terms: D000236:Adenoma / Q000601:surgery*; D003111:Colonic Polyps / Q000601:surgery*; D006801:Humans; D008297:Male; D012811:Sigmoid Neoplasms / Q000601:surgery*; D012812:Sigmoidoscopy / Q000295:instrumentation*