About the Authors
- Kenneth Harttgen
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Affiliation ETH Zürich, NADEL, Zürich, Switzerland
- Paul Kowal
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Affiliation World Health Organization, Geneva, Switzerland
- Holger Strulik
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Affiliation University of Göttingen, Department of Economics, Göttingen, Germany
- Somnath Chatterji
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Affiliation World Health Organization, Geneva, Switzerland
- Sebastian Vollmer
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* E-mail: svollmer@uni-goettingen.de
Affiliations University of Göttingen, Department of Economics, Göttingen, Germany, Harvard School of Public Health, Department of Global Health and Population, Boston, Massachusetts, United States of America
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Analyzed the data: KH SV. Wrote the paper: KH PK SC SV. Contributed to the development of the conception of the paper: KH PK HS SC SV. Edited the paper: KH PK HS SC SV.