About the Authors
- Ties Boerma
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* E-mail: boermat@who.int
Affiliation World Health Organization, Geneva, Switzerland
- Carla AbouZahr
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Affiliation Independent consultant
- David Evans
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Affiliation World Health Organization, Geneva, Switzerland
- Tim Evans
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Affiliation World Bank Group, Washington (D.C.), United States of America
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Analyzed the data: JTB. Wrote the first draft of the manuscript: JTB CAZ. Contributed to the writing of the manuscript: JTB CAZ DE TE. ICMJE criteria for authorship read and met: JTB CAZ DE TE. Agree with manuscript results and conclusions: JTB CAZ DE TE.