pubmed:affiliation |
Division of Medicine, Section of Respiratory Therapy, The Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA. stollej@ccf.org
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.,
Randomized Controlled Trial,
Research Support, N.I.H., Extramural
|