Friends Research Institute, Los Angeles, California, United States
Haight Ashbury Free Clinics, San Francisco, California, United States
University of Minnesota, Minneapolis, Minnesota, United States
Johns Hopkins University (BPRU) Bayview Campus, Baltimore, Maryland, United States
University of Minnesota, Minneapolis, Minnesota, United States
University of Texas Health Science Center, Houston, Texas, United States
University of Pennsylvania, Philadelphia, Pennsylvania, United States
University of Minnesota, Minneapolis, Minnesota, United States
Johns Hopkins University School of Medicine, Baltimore, Maryland, United States