About the Authors

Dennis Ross-Degnan

Contributed equally to this work with: Dennis Ross-Degnan, John Chalker

Roles Conceptualization, Formal analysis, Methodology, Writing – original draft

Affiliations Harvard Medical School, Boston, Massachusetts, United States of America, Harvard Pilgrim Health Care Institute, Boston, Massachusetts, United States of America

John Chalker

Contributed equally to this work with: Dennis Ross-Degnan, John Chalker

Roles Conceptualization, Funding acquisition, Methodology, Project administration, Writing – original draft

John.chalker@ymail.com

Affiliation Pharmaceuticals and Health Technologies Group, Management Sciences for Health, Arlington, Virginia, United States of America

Jafary Liana

Roles Investigation, Supervision, Writing – review & editing

Affiliation Apotheker Consultancy Ltd, Dar es Salaam, Tanzania

Mwikemo Deborah Kajoka

Roles Methodology, Project administration, Writing – review & editing

Affiliation Ministry of Health, Community Development, Gender, Elderly and Children, Dar es Salaam, Tanzania

Richard Valimba

Roles Methodology, Supervision, Writing – review & editing

Affiliation Management Sciences for Health, Dar es Salaam, Tanzania

Suleiman Kimatta

Roles Methodology, Project administration, Writing – review & editing

Affiliation Management Sciences for Health, Dar es Salaam, Tanzania

Angel Dillip

Roles Conceptualization, Formal analysis, Investigation, Writing – review & editing

Affiliation Ifakara Health Institute, Dar es Salaam, Tanzania

Catherine Vialle-Valentin

Roles Formal analysis, Writing – review & editing

Affiliations Harvard Medical School, Boston, Massachusetts, United States of America, Harvard Pilgrim Health Care Institute, Boston, Massachusetts, United States of America

Martha Embrey

Roles Methodology, Writing – review & editing

Affiliation Pharmaceuticals and Health Technologies Group, Management Sciences for Health, Arlington, Virginia, United States of America

Rachel Lieber

Roles Methodology, Project administration, Writing – review & editing

Affiliation Pharmaceuticals and Health Technologies Group, Management Sciences for Health, Arlington, Virginia, United States of America

Keith Johnson

Roles Methodology, Project administration, Writing – review & editing

Affiliation Pharmaceuticals and Health Technologies Group, Management Sciences for Health, Arlington, Virginia, United States of America

Competing Interests

We have the following interests: JL is employed by Apotheker Consultancy (T) Limited. Apotheker Consultancy (T) Limited is a Tanzanian consulting firm that we hired to help collect data for the baseline and endline surveys and train and supervise the staff at the intervention clinics. There are no patents, products in development, or marketed products to declare. This does not alter our adherence to all the PLOS ONE policies on sharing data and materials.