About the Authors

Chara E. Rydzak

Affiliations Harvard Medical School, Boston, Massachusetts, United States of America, Department of Health Policy and Management, Harvard School of Public Health, Boston, Massachusetts, United States of America

Kara L. Cotich

Affiliation Department of Health Policy and Management, Harvard School of Public Health, Boston, Massachusetts, United States of America

Paul E. Sax

Affiliation Division of Infectious Diseases, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts, United States of America

Heather E. Hsu

Affiliations Harvard Medical School, Boston, Massachusetts, United States of America, Division of General Medicine, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America

Bingxia Wang

Affiliation Division of General Medicine, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America

Elena Losina

Affiliations Division of General Medicine, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America, Department of Orthopedic Surgery, Brigham and Women's Hospital, Boston, Massachusetts, United States of America, Departments of Biostatistics and Epidemiology, Boston University School of Public Health, Boston, Massachusetts, United States of America

Kenneth A. Freedberg

Affiliations Harvard Medical School, Boston, Massachusetts, United States of America, Department of Health Policy and Management, Harvard School of Public Health, Boston, Massachusetts, United States of America, Division of General Medicine, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America, Departments of Biostatistics and Epidemiology, Boston University School of Public Health, Boston, Massachusetts, United States of America, Division of Infectious Diseases, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America

Milton C. Weinstein

Affiliation Department of Health Policy and Management, Harvard School of Public Health, Boston, Massachusetts, United States of America

Sue J. Goldie

sue_goldie@harvard.edu

Affiliation Department of Health Policy and Management, Harvard School of Public Health, Boston, Massachusetts, United States of America

for the CEPAC Investigators

Members of the CEPAC Investigators are listed in the Acknowledgments.

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CR KAF MCW SG. Performed the experiments: CR KLC HEH BW. Analyzed the data: CR KLC PS HEH BW EL KAF MCW SG. Wrote the paper: CR SG. Provided critical review, expert opinion and guidance: PS KAF MCW. Statistical advice/consultation: BW EL.