1. Neurobehavior Unit, VA Greater Los Angeles Healthcare System, Department of Neurology, University of California at Los Angeles, Los Angeles, California, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California, eliotlicht@ sbcglobal.net
2. Neurobehavior Unit, VA Greater Los Angeles Healthcare System, Department of Neurology, University of California at Los Angeles, Los Angeles, California, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California
3. David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California