1. From the Department of Internal Medicine II (M.A.), Division of Respirology, University of Regensburg, Regensburg, Germany; the Sleep Research Laboratories of the Toronto Rehabilitation Institute (M.A., C.M.R., M.B., T.D.B.) and Toronto General Hospital (C.M.R., T.D.B.) and the Centre for Sleep Medicine and Circadian Biology (M.A., C.M.R., T.D.B.), University of Toronto, Toronto, Ontario, Canada; and the Department of Population Health Sciences (T.Y., P.E.P., L.F.), University of Wisconsin School of...