About the Authors

Westyn Branch-Elliman

wbranche@bidmc.harvard.edu

Affiliations Division of Infectious Diseases, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America, Division of Infection Control/Hospital Epidemiology. Silverman Institute for Health Care Quality and Safety, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America

Grace M. Lee

Affiliations Department of Population Medicine, Center for Child Health Care Studies, Harvard Pilgrim Institute and Harvard Medical School, Boston, Massachusetts, United States of America, Division of Pediatric Infectious Disease and Department of Laboratory Medicine, Boston Children’s Hospital, Boston, Massachusetts, United States of America

Toni H. Golen

Affiliation Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America

Howard S. Gold

Affiliations Division of Infectious Diseases, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America, Division of Infection Control/Hospital Epidemiology. Silverman Institute for Health Care Quality and Safety, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America

Linda M. Baldini

Affiliation Division of Infection Control/Hospital Epidemiology. Silverman Institute for Health Care Quality and Safety, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America

Sharon B. Wright

Affiliations Division of Infectious Diseases, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America, Division of Infection Control/Hospital Epidemiology. Silverman Institute for Health Care Quality and Safety, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America

Competing Interests

The authors have the following interests: Howard Gold, one of the study's authors, has a sibling who is employed as an executive at Merck, but does not work with antimicrobial drugs. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: WBE GML THG HSG LMB SBW. Analyzed the data: WBE GML SBW. Wrote the paper: WBE GML THG HSG LMB SBW.