1. Division of Infectious Diseases, Department of Medicine, University at Buffalo, The State University of New York, Buffalo, New York, USA
2. Department of Microbiology and Immunology, Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
3. Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University at Buffalo, The State University of New York, Buffalo, New York, USA
4. Department of Medicine, Veterans Affairs Western New York Healthcare System, Buffalo, New York, USA
5. Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, Connecticut, USA