title: The nitroglycerine ointment test--a double-blind examination.
mesh_terms: D002986:Clinical Trials as Topic; D004878:Ergotamine / Q000008:administration & dosage; D005260:Female; D006261:Headache / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008722:Methods; D008881:Migraine Disorders / Q000175:diagnosis* / Q000188:drug therapy; D005996:Nitroglycerin; D009824:Ointments; D010919:Placebos; D013997:Time Factors
chemical_list: D009824:Ointments; D010919:Placebos; D005996:Nitroglycerin; D004878:Ergotamine