AmbrosinoN, VaghegginiG. Non-invasive ventilation in exacerbations of COPD. Int J Chron Obstruct Pulmon Dis, 2007; 2(4):471-476.
2.
PauwelsRA, BuistAS, CalverleyPM, JenkinsCR, HurdSS. Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease. NHLBI/WHO Global Initiative for Chronic Obstructive Lung Disease (GOLD) Workshop summary. Am J Respir Crit Care Med, 2001; 163(5):1256-1276.