title: Letter: Cancer, asthma, and cyclic A.M.P.
mesh_terms: D001249:Asthma / Q000150:complications* / Q000378:metabolism; D001993:Bronchodilator Agents / Q000494:pharmacology; D000242:Cyclic AMP / Q000378:metabolism*; D006801:Humans; D009369:Neoplasms / Q000150:complications / Q000453:epidemiology* / Q000473:pathology; D012189:Retrospective Studies
chemical_list: D001993:Bronchodilator Agents; D000242:Cyclic AMP