1. Virginia Tech Carilion School of Medicine, Roanoke, VA 24016, USA
2. Infection Prevention and Control Section, Carilion Clinic, Roanoke, VA 24014, USA
3. Virginia Tech Center for Biostatistics and Health Data Science, Roanoke, VA 24016, USA
4. Section of Infectious Diseases, Carilion Clinic, Roanoke, VA 24014, USA
5. Department of Medicine, Carilion Clinic, Roanoke, VA 24014, USA