title: Polyethylene tubing in canalicular surgery.
mesh_terms: D003608:Dacryocystorhinostomy; D006801:Humans; D007440:Intubation; D007765:Lacrimal Apparatus / Q000601:surgery; D008722:Methods; D009296:Nasal Cavity; D011095:Polyethylenes
chemical_list: D011095:Polyethylenes