About the Authors

Peter Bacchetti

peter@biostat.ucsf.edu

Affiliation Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, United States of America

Ross Boylan

Affiliation Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, United States of America

Jacquie Astemborski

Affiliations Department of Medicine, Johns Hopkins University, Baltimore, Maryland, United States of America, Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

Hui Shen

Affiliations Department of Medicine, University of California San Francisco, San Francisco, California, United States of America, Division of Gastroenterology, San Francisco Veterans Affairs Medical Center, San Francisco, California, United States of America

Shruti H. Mehta

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

David L. Thomas

Affiliation Department of Medicine, Johns Hopkins University, Baltimore, Maryland, United States of America

Norah A. Terrault

Affiliations Department of Medicine, University of California San Francisco, San Francisco, California, United States of America, Department of Surgery, University of California San Francisco, San Francisco, California, United States of America

Alexander Monto

Affiliations Department of Medicine, University of California San Francisco, San Francisco, California, United States of America, Division of Gastroenterology, San Francisco Veterans Affairs Medical Center, San Francisco, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PB RB SHM DLT NAT AM. Performed the experiments: SHM DLT NAT AM. Analyzed the data: PB RB. Contributed reagents/materials/analysis tools: JA HS DLT NAT AM. Wrote the paper: PB RB SHM DLT NAT AM. Prepared data for analysis: PB JA HS.