Routine sinus roentgenograms and chronic urticaria.
D002908:Chronic Disease; D006801:Humans; D010256:Paranasal Sinuses / Q000000981:diagnostic imaging*; D011859:Radiography; D012852:Sinusitis / Q000150:complications* / Q000000981:diagnostic imaging; D014581:Urticaria / Q000150:complications*