1. Los Angeles County and University of Southern California Medical Center, Los Angeles, California (B.S.)
2. Stritch School of Medicine and Parkinson School of Health Sciences and Public Health, Loyola University Chicago, Maywood, Illinois (T.B.N.)
3. Providence Portland Medical Center and University of Oregon Health Sciences School of Medicine, Portland, Oregon (D.N.G.)
4. Pulmonary and Critical Care Medicine Service, MedStar Washington Hospital Center, Washington, DC (A.F.S.)
5. David Geffen School of Medicine at the University of California, Los Angeles, Los Angeles, California (E.P.B.)