Funding for this research was provided by:
Ministry of Education, Culture, Sports, Science and Technology (JP23406025)
Received: 13 February 2019
Accepted: 9 April 2019
First Online: 2 May 2019
Ethics approval and consent to participate
: Clearance to undertake the follow-up study was obtained from the District Health Office of the Ministry of Health (MOH) in Malawi and Kansai Medical University Ethical Committee in Japan. In the areas used in the study, permission to proceed with the study was obtained from the District Health Officer (DHO). The approved number of Ethics Review Committee (KAN-I-RIN) is 0758.We distributed instruction on this study written in Chichewa (Malawian domestic language) to all participants and then they received an explanation on this study in Chichewa from the Malawi Ministry of Health staff. After these series of explanation, a signed consent form was obtained from both the new and old participants in this study. The consent form contained the following information: general introduction of the study, usefulness of the study, and purpose of the study. The participants were allowed to withdraw at any point during the project whenever they deemed appropriate.
: Not applicable.
: The authors declare that they have no competing interests.
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