James G. Kahn is with the Institute for Health Policy Studies, Department of Epidemiology and Biostatistics; the AIDS Research Institute; and the Center for AIDS Prevention Studies, University of California, San Francisco. Brian Haile is with the Institute for Health Policy Studies, University of California, San Francisco. Jennifer Kates is with the Henry J. Kaiser Family Foundation, Menlo Park, Calif. Sophia Chang is with the Veterans Health Administration, Center for Quality Management in HIV Care,...