1. Department of Psychiatry, University of California, San Diego, CA 92093-0667, Synchrony Applied Health Sciences, Del Mar, CA 92014-3805
2. Department of Psychiatry, University of California, San Diego, CA 92093-0667
3. Mayo Clinic Sleep Disorders Center, Rochester, MN 55905
4. Ambulatory Monitoring, Inc., Ardsley, NY 10502