1. Advocate Illinois Masonic Medical Center, Department of Internal Medicine, 856 West Nelson Street, Apt No. 2002, Chicago, IL 60657, USA
2. Advocate Illinois Masonic Medical Center, Department of Internal Medicine, 2356 North Elston Avenue, No. 306, Chicago, IL 60614, USA
3. RUSH University Medical Center, Department of Rheumatology, 1725 West Harrison Street, Chicago, IL 60612, USA