1. Division of Infectious Diseases Departments of Medicine and Pediatrics Emory University School of Medicine & Children's Healthcare of Atlanta Atlanta Georgia USA
2. Division of Infectious Diseases University of Alabama at Birmingham Birmingham Alabama USA
3. Division of Infectious Diseases Department of Medicine University of Arizona College of Medicine Tucson Arizona USA
4. VA St. Louis Healthcare St Louis Missouri USA
5. Division of Infectious Diseases Department of Internal Medicine University of Nebraska Medical Center Omaha Nebraska USA