Funding for this research was provided by:
Japan Society for the Promotion of Science (26671037)
Received: 5 November 2020
Accepted: 21 January 2021
First Online: 1 February 2021
Ethics approval and consent to participate
: The study was approved by the University of Zambia Biomedical Research Ethics Committee (authorization number: 002-10-15) and the Ethical Committees of Nagasaki University Graduate School of Biomedical Sciences (authorization number: 15042404).
: The study participants completed the questionnaire and deposited the completed questionnaire in the collection box after receiving verbal and written ethical explanations of the study’s purposes, methods, anonymous process of data collection and analysis, confidentiality, and publication. The authors deemed this action to represent consent to participate in the study. This research article does not include any individual participant data, such as images, videos, or voice recordings.
: The authors declare no conflict of interest in the publication of this article.