Funding for this research was provided by:
the Supporting Organization of J.O.C.V.
Kyoto University Student Overseas Research Activity Grant
Kyoto University SPIRITS
Received: 29 November 2021
Accepted: 13 April 2022
First Online: 2 May 2022
: Verbal and written consent was obtained as the information gathered was unidentifiable, and the study risk was minimal. Ethical clearance and permissions were obtained from the Kyoto University Graduate School of Medicine Ethics Committee (R1911) and the National Institute of Medical Research of Tanzania (NIMR/HQ/R.8a/Vol/IX/988).
: Not applicable.
: The authors declare that they have no competing interests.