1 VA Pittsburgh Healthcare System, Pittsburgh, PA.2 University of Pittsburgh, Pittsburgh, PA.3 Duke University Medical Center, Durham, NC.4 Faculté de Médecine Paris Descartes, Hôpital Necker-Enfants Malades, Paris, France.5 Institut Pasteur, Paris, France.6 Currently, Oregon Health Sciences University, Portland, OR; formerly, University of Maryland School of Medicine, Baltimore, MD.7 Emory University, Atlanta, GA.8 Postgraduate Institute of Medical Education and Research, Chandigarh, Punjab, India.9 Henry Ford Hospital, Detroit, MI.10 University of Minnesota, Minneapolis, MN; formerly University of Virginia, Charlottesville, VA.11 University of Washington, Seattle, WA.12 Christian Medical College Hospital, Vellore, Tamil Nadu, India.13 Baylor University Medical Center, Dallas, TX.14 University of Chicago, Chicago, IL.15 Northwestern University, Chicago, IL.16 University of Miami Miller School of Medicine, Miami, FL.17 Hospital General Universitario Gregorio Marañón, CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain.18 University of Nebraska, Omaha, NE.19 Ochsner Clinic, New Orleans, LA.20 Oregon Health Sciences University, Portland, OR.21 University of Western Ontario, London, Canada.22 Tampa General Hospital, Tampa, FL.23 Medical University of South Carolina, Charleston, SC.24 Mount Sinai Medical Center, New York, NY.25 St. John Medical Center, Detroit, Michigan, MI.26 Currently, University of Alberta, Edmonton, AB, Canada; formerly, University Health Network, Toronto General Hospital, Toronto, ON, Canada.27 Mayo Clinic, Rochester, MN.28 Virginia Commonwealth University, Richmond, VA.29 Currently, University Health Network, Toronto General Hospital, Toronto, ON, Canada; formerly, University of Pittsburgh, Pittsburgh, PA.
