RT Journal Article SR Electronic T1 Does noninvasive positive pressure ventilation have a role in managing hypercapnic respiratory failure due to an acute exacerbation of COPD? JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 458 OP 461 VO 75 IS 6 A1 Gershman, Ari J. A1 Reddy, Anita J. A1 Budev, Marie M. A1 Mazzone, Peter J. YR 2008 UL http://www.ccjm.org/content/75/6/458.abstract AB