title: Non-invasive positive pressure ventilation for severe COPD--Authors' reply.
authors.affiliation: Department of Respiratory Medicine, Hannover Medical School, Hannover D-30625, Germany. Electronic address: koehnlein.thomas@mh-hannover.de.
authors.forename: Thomas
authors.initials: T
authors.lastname: Köhnlein
authors.affiliation: Centre for Respiratory Medicine, Hospital Köln-Merheim, University of Witten-Herdecke, Cologne, Germany.
authors.forename: Wolfram
authors.initials: W
authors.lastname: Windisch
authors.affiliation: Department of Medical Biometry and Epidemiology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany.
authors.forename: Karl
authors.initials: K
authors.lastname: Wegscheider
authors.affiliation: Department of Respiratory Medicine, Hannover Medical School, Hannover D-30625, Germany.
authors.forename: Tobias
authors.initials: T
authors.lastname: Welte
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D063087:Noninvasive Ventilation / Q000379:methods*; D011175:Positive-Pressure Respiration / Q000379:methods*; D029424:Pulmonary Disease, Chronic Obstructive / Q000401:mortality* / Q000628:therapy*