1 Clinical Center, National institutes of Health, Bethesda, Maryland.
2 Infection Prevention and Control/Infectious Diseases Programs, Queen Elizabeth Hospital, Barbados, West Indies.
3 Department of Medicine, University of Massachusetts Medical School-Baystate, Springfield, Massachusetts.
4 Duke Children's Health Center Infectious Diseases Clinic, Durham, North Carolina.
5 Section of Infectious Diseases, Department of Pediatrics, Rush Medical College, Chicago, Illinois, United States.
6 St Joseph Mercy Health System, Ann Arbor, Michigan.
7 Cedars-Sinai, Los Angeles, California.
8 Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.
9 Department of Hospital Epidemiology and Infection Control, The Johns Hopkins Hospital, Baltimore, Maryland.
10 Johns Hopkins Armstrong Institute for Patient Safety and Quality, Baltimore, Maryland.
11 Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, North Carolina.
12 Department of Hospital Epidemiology, University of North Carolina Hospitals, Chapel Hill, North Carolina.
13 Division of Infection Control/Hospital Epidemiology, Silverman Institute for Health Care Quality and Safety, Beth Israel Deaconess Medical Center, Boston, Massachusetts.
14 Division of Infectious Diseases, Beth Israel Deaconess Medical Center, Boston, Massachusetts.
15 Division of Infectious Diseases, Department of Medicine, University of California-San Francisco, San Francisco, California.
16 Division of Infectious Diseases, Department of Internal Medicine, Rush Medical College, Chicago, Illinois.