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Authors
Weng, Qiao
Jiang, Jie
Haji, Fatma Mrisho
Nondo, Lamlet Hassan
Zhou, Huaijun
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (81701475)
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Article History
Received: 21 August 2019
Accepted: 9 January 2020
First Online: 28 January 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Zanzibar Medical Research and Ethics Committee approved the study (Reference number ZAMREC/0003/APRIL/ 2018). The study population included 1483 participants who had given verbal and written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
