Funding for this research was provided by:
Ministry of Health, Labour and Welfare (H27-地球規模-若手-005)
Text and Data Mining valid from 2020-04-10
Received: 21 August 2019
Accepted: 24 March 2020
First Online: 10 April 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the University of Zambia’s Biomedical Research Ethics Committee (ref: 018–12–16) and the Ethics Committee of the National Center for Global Health and Medicine in Japan (ref: NCGM-G-002167-00). Written informed consent was obtained from the closest relatives of the deceased.
: Not applicable.
: The authors declare that they have no competing interests.