Department of Physical Medicine and Rehabilitation;
School of Medicine;
Northwestern University;
Chicago;
IL 60611;
United States;
Department of Preventive Medicine;
Feinberg School of Medicine;
Northwestern University;
Chicago;
IL 60611;
United States;
University of Chicago Medical Center;
Chicago;
IL 60637;
United States;
The Rehabilitation Institute of Chicago;
Chicago;
IL 60611;
United States;
Chicago College of Osteopathic Medicine;
Chicago;
IL 60515;
United States;