About the Authors

Nicholas G. Reich

nick@schoolph.umass.edu

Affiliation Division of Biostatistics and Epidemiology, University of Massachusetts, Amherst, Massachusetts, United States of America

Jessica A. Myers

Affiliation Division of Pharmacoepidemiology and Pharmacoeconomics, Brigham and Women’s Hospital, Boston, Massachusetts, United States of America

Daniel Obeng

Affiliation Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

Aaron M. Milstone

Affiliation Department of Pediatrics, Division of Pediatric Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America

Trish M. Perl

Affiliation Department of Medicine, Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America

Competing Interests

This study was partly funded by Sage Products, Inc. There are no patents, products in development or marketed products to declare. 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: NGR JAM DO AMM TMP. Performed the experiments: NGR JAM DO. Analyzed the data: NGR JAM DO. Wrote the paper: NGR JAM.