title: Polyethylene intubation of the nasolacrimal duct in chronic dacryocystitis. A review of forty cases with one year's follow-up.
mesh_terms: D002648:Child; D002908:Chronic Disease; D003607:Dacryocystitis / Q000601:surgery*; D004322:Drainage; D005500:Follow-Up Studies; D006801:Humans; D007440:Intubation; D007765:Lacrimal Apparatus / Q000601:surgery*; D008722:Methods; D011095:Polyethylenes
chemical_list: D011095:Polyethylenes