title: Nitroglycerine ointment as an aid to venepuncture.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002404:Catheterization; D002986:Clinical Trials as Topic; D006801:Humans; D007263:Infusions, Parenteral; D008875:Middle Aged; D005996:Nitroglycerin / Q000008:administration & dosage*; D009824:Ointments; D011300:Preoperative Care; D011897:Random Allocation; D014680:Veins
chemical_list: D009824:Ointments; D005996:Nitroglycerin