The authors reply.
Department of General Internal Medicine, Baystate Medical Center, Springfield, MA OptiStatim LLC, Longmeadow, MA Center for Quality of Care Research, Baystate Medical Center, Springfield, MA.
Mihaela S
MS
Stefan
Brian H
BH
Nathanson
Peter K
PK
Lindenauer
D005260:Female; D006801:Humans; D008297:Male; D029424:Pulmonary Disease, Chronic Obstructive / Q000628:therapy*; D012121:Respiration, Artificial