1. Department of Epidemiology Columbia University Mailman School of Public Health New York New York USA
2. Department of Medical Sciences Frank H. Netter School of Medicine at Quinnipiac University North Haven Connecticut USA
3. Department of Psychiatry Columbia University Vagelos College of Physicians & Surgeons New York New York USA
4. New York State Psychiatric Institute HIV Center for Clinical and Behavioral Studies New York New York USA
5. Department of Psychiatry University of Pennsylvania Perelman School of Medicine and Mental Illness Research, Education and Clinical Center, Crescenz Veterans Affairs Medical Center Philadelphia Pennsylvania USA
6. Department of Psychiatry Yale University School of Medicine and VA CT Healthcare Center West Haven Connecticut USA