Oosting, E Increased urinary excretion of the histamine metabolite N tau-methylhistamine during acetylsalicylic acid provocation in chronic urticaria patients. [electronic resource] - Agents and actions Apr 1990 - 254-7 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article ISSN: 0065-4299 Standard No.: 10.1007/BF01969053 doi Subjects--Topical Terms: AdultAgedAspirin--adverse effectsChronic DiseaseFemaleHistamine Release--drug effectsHumansMaleMethylhistamines--urineMiddle AgedUrticaria--urine