title: Letter: To use or not to use heparin in neonates with indwelling umbilical catheters.
mesh_terms: D002404:Catheterization; D002408:Catheters, Indwelling; D006493:Heparin / Q000627:therapeutic use*; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000517:prevention & control; D013927:Thrombosis / Q000517:prevention & control; D014469:Umbilical Arteries
chemical_list: D006493:Heparin