About the Authors

Sara E. Abiola

Roles Conceptualization, Formal analysis, Writing – original draft

sabiola@columbia.edu

Affiliation Department of Health Policy & Management, Columbia Mailman School of Public Health, New York, New York, United States of America

Michelle M. Mello

Roles Conceptualization, Funding acquisition, Supervision, Writing – review & editing

Affiliation Department of Health Research and Policy, Stanford School of Medicine, Stanford Law School, Palo Alto, California, United States of America

Competing Interests

The authors have read the journal’s policy and have the following conflicts: In the course of this study, the authors collaborated with Paragon Corporation and MayaTech Corporation. The authors hired Paragon Corporation to help construct an online platform for data entry and management. MayaTech Corporation shared their methodology with authors so that the authors could understand their coding system. The authors are not affiliated in any other way with either of these entities outside of the work just described. This does not alter our adherence to all the PLOS ONE policies on sharing data and materials.