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Authors
Wang, Linping https://orcid.org/0000-0002-0202-3703
Poque, Sylvain https://orcid.org/0000-0002-5368-0738
Valkonen, Jari P. T. https://orcid.org/0000-0002-3704-9911
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Funding
Funding for this research was provided by:
China Scholarship Council (201406040060)
Bill and Melinda Gates Foundation
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Article History
Received: 7 August 2019
Accepted: 10 October 2019
First Online: 22 October 2019
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.
