1. Sleep Research and Treatment Center, Department of Psychiatry & Behavioral Health, Penn State University, College of Medicine, Hershey, PA (N.M.-G., M.L., S.L.C., A.N.V., E.O.B., J.F.-M.).
2. Department of Public Health Sciences, Penn State University, College of Medicine, Hershey, PA (F.H., J.L., D.L.).