1. Division of Infectious Diseases, Medical University of South Carolina , Charleston, USA
2. Division of Infectious Diseases, MetroHealth Medical Center, USA
3. Department of Medicine, Case Western Reserve University School of Medicine , Cleveland, Ohio, USA
4. Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention , Atlanta, Georgia, USA
5. Research Service
6. Geriatric Research, Education, and Clinical Center, Louis Stokes Cleveland Veterans Affairs Medical Center , Ohio, USA