title: Proquazone for tension headache--a multicenter trial.
mesh_terms: D000328:Adult; D000700:Analgesics / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006261:Headache / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011799:Quinazolines / Q000627:therapeutic use*; D011897:Random Allocation
chemical_list: D000700:Analgesics; D011799:Quinazolines; C011385:proquazone