About the Authors
- Ann Levin
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* E-mail: annlevin@verizon.net
Affiliation Bethesda, Maryland, United States of America
- Arnold Fang
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Current address: National Graduation Institute for Policy Studies, Tokyo, Japan
Affiliation GAVI Alliance, Geneva, Switzerland
- Peter M. Hansen
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Affiliation GAVI Alliance, Geneva, Switzerland
- David Pyle
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Affiliation John Snow International, Arlington, Virginia, United States of America
- Ousmane Dia
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Affiliation John Snow International, Arlington, Virginia, United States of America
- Nina Schwalbe
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Affiliation GAVI Alliance, Geneva, Switzerland
Competing Interests
GAVI contracted John Snow International to conduct the research and John Snow International contracted with Ann Levin to lead the research team. This affiliation this does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.
Author Contributions
Conceived and designed the experiments: AL AF DP OD. Performed the experiments: AL OD. Analyzed the data: AL. Wrote the paper: AL AF PH DP OD NRS. Consultant to John Snow International for the research: AL. Assisted in writing and editing of the paper: AF PH. Was formerly an employee of GAVI: AF. Assisted in writing: DP. Edited the paper: DP NRS.