title: Letter: Asthma mortality associated with pneumothorax.
mesh_terms: D001249:Asthma / Q000188:drug therapy / Q000401:mortality*; D006801:Humans; D006854:Hydrocortisone / Q000627:therapeutic use; D011030:Pneumothorax / Q000150:complications*; D011239:Prednisolone / Q000627:therapeutic use
chemical_list: D011239:Prednisolone; D006854:Hydrocortisone