title: A clinical trial of efficacy of antiproteolytic therapy: can it be done?
mesh_terms: D002986:Clinical Trials as Topic; D005541:Forced Expiratory Volume; D006801:Humans; D011480:Protease Inhibitors / Q000627:therapeutic use; D011656:Pulmonary Emphysema / Q000188:drug therapy; D013223:Statistics as Topic; D019896:alpha 1-Antitrypsin Deficiency
chemical_list: D011480:Protease Inhibitors