1. Department of Psychiatry & Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, CA
2. VA Greater Los Angeles HealthCare System, North Hills, CA
3. Greater Los Angeles Veterans Research and Education Foundation, Los Angeles, CA
4. Physiological Psychology Lab, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
5. Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA