1. Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, New Hampshire, United States
2. Department of Pathology and Laboratory Medicine, Center for Biomedical Shared Resources, Larner College of Medicine, University of Vermont, Burlington, Vermont, United States
3. Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio, United States