1. University of Illinois at Chicago, Chicago, Illinois
2. Jesse Brown VA Medical Center, Chicago, Illinois
3. Edward Hines Jr Department of Veterans Affairs Hospital, Hines, Illinois
4. Loyola University Stritch School of Medicine, Maywood, Illinois
5. Rush University Medical Center, Chicago, Illinois
6. Howard Brown Health, Chicago, Illinois
7. Illinois Sleep Counseling, PLLC, Highland Park, Illinois