About the Authors

Martha Embrey

membrey@msh.org

Affiliation Pharmaceuticals & Health Technologies Group, Management Science for Health, Arlington, Virginia, United States of America

Catherine Vialle-Valentin

Affiliation Drug Policy Research Group, Department of Population Medicine, Harvard Pilgrim Health Care Institute, Harvard Medical School, Boston, Massachusetts, United States of America

Angel Dillip

Contributed equally to this work with: Angel Dillip, Bernard Kihiyo, Romuald Mbwasi, Innocent A. Semali

Affiliation Ifakara Health Institute, Dar es Salaam, Tanzania

Bernard Kihiyo

Contributed equally to this work with: Angel Dillip, Bernard Kihiyo, Romuald Mbwasi, Innocent A. Semali

Affiliation Tanzania Consumer Advocacy Society, Dar es Salaam, Tanzania

Romuald Mbwasi

Contributed equally to this work with: Angel Dillip, Bernard Kihiyo, Romuald Mbwasi, Innocent A. Semali

Affiliation Apotheker Consultancy (T) Limited, St. Johns University of Dodoma, Dodoma, Tanzania

Innocent A. Semali

Contributed equally to this work with: Angel Dillip, Bernard Kihiyo, Romuald Mbwasi, Innocent A. Semali

Affiliation School of Public Health, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania

John C. Chalker

Affiliation Pharmaceuticals & Health Technologies Group, Management Science for Health, Arlington, Virginia, United States of America

Jafary Liana

Affiliation Pharmaceuticals & Health Technologies Group, Management Science for Health, Dar es Salaam, Tanzania

Rachel Lieber

‡ These authors also contributed equally to this work.

Affiliation Pharmaceuticals & Health Technologies Group, Management Science for Health, Arlington, Virginia, United States of America

Keith Johnson

‡ These authors also contributed equally to this work.

Affiliation Pharmaceuticals & Health Technologies Group, Management Science for Health, Arlington, Virginia, United States of America

Edmund Rutta

‡ These authors also contributed equally to this work.

Affiliation Pharmaceuticals & Health Technologies Group, Management Science for Health, Arlington, Virginia, United States of America

Suleiman Kimatta

Affiliation Pharmaceuticals & Health Technologies Group, Management Science for Health, Dar es Salaam, Tanzania

Elizabeth Shekalaghe

Affiliation Pharmacy Council of Tanzania, Dar es Salaam, Tanzania

Richard Valimba

Affiliation Pharmaceuticals & Health Technologies Group, Management Science for Health, Dar es Salaam, Tanzania

Dennis Ross-Degnan

Affiliation Drug Policy Research Group, Department of Population Medicine, Harvard Pilgrim Health Care Institute, Harvard Medical School, Boston, Massachusetts, United States of America

Competing Interests

Romuald Mbwasi is employed by Apotheker Consultancy (T) Limited. Apotheker Consultancy (T) Limited is a Tanzanian consulting firm that we hired to collect data for the ADDO and health facility audits and exit interviews. 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.

Author Contributions

Conceptualization: ME JL RL KJ ER SK RV ES. Formal analysis: CVV DRD JC. Funding acquisition: KJ ME. Investigation: AD BK RM IAS. Methodology: ME CVV JC DRD ME KJ RM JL. Project administration: ME JL RM BK IAS AD RL. Supervision: DRD KJ JL. Writing – original draft: ME. Writing – review & editing: JC KJ RL DRD RM IAS CVV.