1 Section of Pulmonary and Critical Care Medicine, Sleep Disorders Center, The University of Chicago Pritzker School of Medicine; the Division of Pulmonary and Critical Care Medicine, Sleep Laboratory, John H. Stroger Jr Hospital of Cook County, Chicago, IL. Electronic address: [email protected].
2 Section of Pulmonary and Critical Care Medicine, Sleep Disorders Center, The University of Chicago Pritzker School of Medicine; the Division of Pulmonary and Critical Care Medicine, Sleep Laboratory, John H. Stroger Jr Hospital of Cook County, Chicago, IL.
3 Southern Arizona Veterans Administration Healthcare System, University of Arizona, Tucson, AZ.