1. Division of Infectious Diseases, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
2. Jesse Brown VA Medical Center, Chicago, Illinois, USA
3. Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA
4. Harvard Medical School, Boston, Massachusetts, USA
5. Children's Hospital at Montefiore, Pediatric Infectious Diseases, Einstein College of Medicine, Department of Pediatrics, Bronx, New York, USA
6. Division of Pediatric Infectious Disease, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences (UAMS), Little Rock, Arkansas, USA
7. Infectious Diseases Physicians, Inc., Annandale, Virginia, USA
8. Virginia Commonwealth University, Division of Infectious Diseases, Inova Fairfax Medical Campus, Annandale, Virginia, USA