Mbelambela, Etongola P. http://orcid.org/0000-0002-5688-3119
Muchanga, Sifa M. J.
Villanueva, Antonio F.
Eitoku, Masamitsu
Yasumitsu-Lovell, Kahoko
Hirota, Ryoji
Shimotake, Yuki
Sokolo, Gedikondele J.
Mori, Atsuko
Suganuma, Narufumi
Article History
Received: 24 August 2019
Accepted: 10 July 2020
First Online: 15 July 2020
Compliance with ethical standards
: This study was carried out in accordance with the Declaration of Helsinki. The study protocol was approved by the Ministry of Industries of Democratic Republic of the Congo and the Ethics Committee of Kochi University Medical School, Japan (approval number: 28-87).
: After a detailed explanation of the study contents, all participants gave their voluntary written, signed consent before starting the survey.
: The authors declare that they have no conflict of interest.