Philip W Gold1, Ma-Li Wong2. 1. Intramural Research Program, National Institute of Mental Health, Bethesda, MD, USA. philipgold@mail.nih.gov. 2. Departments of Psychiatry and Behavioral Sciences, and Neurosciences and Physiology, State University of New York, Upstate Medical University, Syracuse, NY, USA. WongMa@upstate.edu.