Arthur G. James Cancer Hospital, Columbus, Ohio
Barnes-Jewish Hospital, St. Louis
Baylor University Medical Center, Dallas
Beth Israel Deaconess Medical Center, Boston
Brigham and Women's Hospital, Boston
Cedars-Sinai Medical Center, Los Angeles
Cook County Hospital, Chicago
Clarian Health Partners, Indianapolis
Duke University Medical Center, Durham, N.C.
F.G. McGaw Hospital at Loyola University, Maywood, Ill.
Georgetown University Hospital, Washington, D.C.
Greater Baltimore Medical Center, Baltimore
St. Joseph Hospital, Denver
Hospital of the University of Pennsylvania, Philadelphia
Johns Hopkins Hospital, Baltimore
Los Angeles County-USC Medical Center
Lutheran General Healthsystem, Park Ridge, Ill.
Magee-Womens Hospital, Pittsburgh
Massachusetts General Hospital, Boston
Mayo Clinic, Rochester, Minn.
Memorial Sloan-Kettering Cancer Center, New York
New York Presbyterian Hospital
Northwestern Memorial Hospital, Chicago
Ohio State University Medical Center, Columbus
Parkland Memorial Hospital, Dallas
Rush-Presbyterian-St. Luke's Medical Center, Chicago
Summa Health System, Akron, Ohio
Shands Hospital at the University of Florida, Gainesville
Stanford University Hospital, Stanford, Calif.
Mount Sinai Medical Center, New York
Thomas Jefferson University Hospital, Philadelphia
Vanderbilt University Hospital and Clinic, Nashville
University of Alabama Hospital at Birmingham
University of California, Irvine Medical Center, Orange
University Hospital, Denver
University Medical Center, Tucson, Ariz.
Mary Hitchcock Memorial Hospital, Lebanon, N.H.
University of California, San Francisco Medical Center
UCLA Medical Center, Los Angeles
University of Chicago Hospitals
Emory University Hospital, Atlanta
University of Michigan Medical Center, Ann Arbor
University of North Carolina Hospitals, Chapel Hill
University of Texas, M. D. Anderson Cancer Center, Houston
University of Wisconsin Hospital and Clinics, Madison
University of Washington Medical Center, Seattle
William Beaumont Hospital, Royal Oak, Mich.
Women and Infants Hospital of Rhode Island, Providence
Yale-New Haven Hospital, New Haven, Conn.