1. From the Medical Practice Evaluation Center, Massachusetts General Hospital; Brigham and Women's Hospital; the Harvard University Center for AIDS Research, Harvard Medical School; Center for Health Decision Science, Harvard T.H. Chan School of Public Health; and Boston University School of Public Health, Boston, Massachusetts; Desmond Tutu HIV Centre, Institute of Infectious Disease and Molecular Medicine, Faculty of Medicine, University of Cape Town, Cape Town, South Africa;
2. and Yale School of Public Health, New Haven, Connecticut.