title: Methylene blue injection reduces pain after lateral anal sphincterotomy.
authors: K Y
authors: KY
authors: Tan
authors: F
authors: F
authors: Seow-Choen
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005401:Fissure in Ano / Q000601:surgery*; D006801:Humans; D007267:Injections; D008297:Male; D008751:Methylene Blue / Q000627:therapeutic use*; D008875:Middle Aged; D010147:Pain Measurement; D010149:Postoperative Pain / Q000517:prevention & control*; D011446:Prospective Studies; D016896:Treatment Outcome
chemical_list: D008751:Methylene Blue