1. Department of Psychiatry; University of Arizona College of Medicine; Tucson Arizona USA
2. Behavioral Sleep Medicine Program, Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania; Philadelphia Pennsylvania USA
3. Center for Evidence-Based Medicine, Elsevier, Inc.; Philadelphia Pennsylvania USA
4. Department of Psychology; University of Southern California; Los Angeles California USA
5. Division of Pulmonary; Critical Care, and Sleep Medicine, University of California; San Diego, La Jolla California USA