Noninvasive Positive-Pressure Ventilation in Patients With Milder Chronic Obstructive Pulmonary Disease Exacerbations: A Randomized Controlled Trial

Department of Medicine, Royal Columbian Hospital, New Westminster, British Columbia; the Centre for Health Evaluation and Outcome Sciences, Saint Paul's Hospital and University of British Columbia, Vancouver, British Columbia; and with the Division of Critical Care, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada.

Division of Respiratory Medicine, Department of Medicine, London Health Sciences Centre, University of Western Ontario, London, Ontario, Canada.

Division of Respiratory Medicine, Department of Medicine, London Health Sciences Centre, University of Western Ontario, London, Ontario, Canada.