1. Division of Pulmonary, Critical Care, and Sleep Medicine, Mayo Clinic Health System, Eau Claire, Wisconsin;
2. Mayo Clinic Alix School of Medicine, Rochester, Minnesota;
3. Division of Pulmonary and Critical Care, Detroit Medical Center, Wayne State University School of Medicine, Detroit, Michigan;
4. Department of Medical Education and
5. Division of Pulmonary and Critical Care, John D. Dingell VA Medical Center, Detroit, Michigan;
6. Respiratory Institute, Cleveland Clinic Akron General Hospital, Akron, Ohio;
7. Respiratory Institute, Cleveland Clinic Main Campus, Cleveland, Ohio; and
8. Department of Medical Education, Ascension Providence Hospital, Southfield, Michigan