The clinical and pharmacological history of theophylline: first report on the bronchospasmolytic action in man by S. R. Hirsch in Frankfurt (Main) 1922.
D001249:Asthma / Q000188:drug therapy / Q000266:history*; D001986:Bronchial Spasm / Q000188:drug therapy / Q000266:history*; D002309:Cardiology / Q000266:history; D005860:Germany, West; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D013806:Theophylline / Q000266:history* / Q000627:therapeutic use
D013806:Theophylline