Scott and White Clinic, Temple, Texas, United States
Infections Limited, P.S., Tacoma, Washington, United States
Rush-Presbyterian-St. Luke's Medical Center, Chicago, Illinois, United States
John Wayne Cancer Institute, Santa Monica, California, United States
Arizona Cancer Center, Tucson, Arizona, United States
University Medical Center, Tucson, Arizona, United States
Cornell AIDS Clinical Trials Unit, New York, New York, United States