| Institution: | 1. Johns Hopkins University, School of Nursing, Department of Community and Public Health, Baltimore, MD;2. Johns Hopkins University, School of Medicine, Division of Infectious Disease, Baltimore, MD;3. Johns Hopkins Hospital, Microbiology Laboratory, Baltimore, MD;4. Johns Hopkins University, Bloomberg School of Public Health, Baltimore, MD;5. Johns Hopkins Hospital Department of Hospital Epidemiology and Infection Control, Baltimore, MD;6. Johns Hopkins Medical Institutions, Baltimore, MD |
