Prefrontal dopamine D1 receptors and working memory in schizophrenia - Abi-Dargham, A; Mawlawi, O; Lombardo, I; Gil, R; Martinez, D; Huang, Y; Hwang, DR; Keilp, J; Kochan, L; Van Heertum, R; Gorman, JM; Laruelle, M (J Neurosci, 2002)