title: Letter: Asthma and cancer.
mesh_terms: D000628:Aminophylline / Q000494:pharmacology / Q000627:therapeutic use; D001249:Asthma / Q000188:drug therapy*; D002395:Catecholamines / Q000494:pharmacology / Q000627:therapeutic use; D000242:Cyclic AMP / Q000378:metabolism; D006801:Humans; D009369:Neoplasms / Q000401:mortality*
chemical_list: D002395:Catecholamines; D000628:Aminophylline; D000242:Cyclic AMP