title: More on heparin lock.
mesh_terms: D000328:Adult; D002408:Catheters, Indwelling; D006493:Heparin / Q000008:administration & dosage*; D006801:Humans; D008722:Methods; D010146:Pain / Q000517:prevention & control*; D011677:Punctures; D014680:Veins
chemical_list: D006493:Heparin