Controversies in pharmacological treatment of COPD: introduction.
Foresi
Antonio
A
Unit of Respiratory Medicine, AO Istituti Clinici di Perfezionamento, Sesto San Giovanni Hospital, Sesto San Giovanni, Italy.
Olivieri
Dario
D
D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy*; D018570:Risk Assessment