About the Authors

Julien Zwang

Affiliation Independent researcher, Bangkok, Thailand

Piero L. Olliaro

olliarop@who.int

Affiliations UNICEF/UNDP/WB/WHO Special Programme for Research & Training in Tropical Diseases (TDR), Geneva, Switzerland, Centre for Tropical Medicine, University of Oxford, Oxford, United Kingdom

Competing Interests

I have read the journal's policy and the authors of this manuscript have the following competing interests: JZ received a grant from Merck Sereno SA to design and analyse the data. This does not alter our adherence to all PLOS policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: JZ PLO. Performed the experiments: JZ PLO. Analyzed the data: JZ PLO. Contributed reagents/materials/analysis tools: JZ PLO. Wrote the paper: JZ PLO. Designed the analysis: JZ PLO. Interpreted the data: JZ PLO. Prepared the manuscript: JZ PLO. Read and approved the final manuscript: JZ PLO.