1. Chonnam National University, College of Nursing, Gwangju, South Korea
2. The Pennsylvania State University, Department of Biobehavioral Health, University Park, Pennsylvania
3. The Pennsylvania State University, College of Nursing, University Park, Pennsylvania
4. The Pennsylvania State University, College of Medicine, Department of Public Health Sciences, Hershey, Pennsylvania
5. University of Pennsylvania, School of Nursing, Philadelphia, Pennsylvania
6. Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, Pennsylvania
7. University of Pennsylvania, Perelman School of Medicine, Center for Sleep & Circadian Neurobiology, Philadelphia, Pennsylvania