1. James B. Skatrud Pulmonary/Sleep Research Laboratory, William S. Middleton Memorial Veteran’s Hospital, Madison, Wisconsin2Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison3Center for Sleep Medicine and Sleep Re
2. Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison
3. Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison5Biostatistics and Medical Informatics, University of Wisconsin School of Medicine and Public Health, Madison