1. Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, United States
2. Department of Infectious Diseases and Microbiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, United States
3. Microbial Genomic Epidemiology Laboratory, Infectious Diseases Epidemiology Research Unit, University of Pittsburgh School of Medicine and Graduate School of Public Health, Pittsburgh, United States
4. Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, United States
5. Department of Microbiology and Molecular Genetics, and Center for Evolutionary Biology and Medicine, University of Pittsburgh, Pittsburgh, United States