Rush Presbyterian St. Luke's Medical Center, Chicago, Illinois, United States
Duke University Medical Center, Durham, North Carolina, United States
Vanderbilt University Medical Center, Nashville, Tennessee, United States
National Institutes of Health Clinical Center, 9000 Rockville Pike, Bethesda, Maryland, United States
Cancer and Leukemia Group B, Chicago, Illinois, United States
Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States
Pennington Biomedical Research Center, Baton Rouge, Louisiana, United States
University of Louisville, Louisville, Kentucky, United States
University at Buffalo, Buffalo, New York, United States
Providence Portland Medical Center, Portland, Oregon, United States
University of Washington, Seattle, Washington, United States