He is Director of the HIV Neurobehavioral Research Program ( HNRP ) .
He is Professor and Chair of the Department of Psychiatry in the School of Medicine at the University of California , San Diego .
Professor is Professor of the HIV Neurobehavioral Research Program ( HNRP ) .
He is Professor and Chair of the Department of Psychiatry in the School of Medicine at the University of California , San Diego .