1. SEARCH Thailand, Thai Red Cross AIDS Research Centre, Bangkok
2. Department of Neurology, Yale University School of Medicine, New Haven, Connecticut
3. Memory and Aging Center, Department of Neurology, University of California San Francisco
4. U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland
5. Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland
6. Center for Neuroepidemiology and Clinical Neurological Research, Yale University, New Haven, Connecticut