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Authors
Fukuda, Hideki
Hayashi, Yoshihiko
Toda, Kazuo
Kaneko, Satoshi
Wagaiyu, Evelyn
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Article History
Received: 27 November 2020
Accepted: 16 March 2021
First Online: 24 March 2021
Declarations
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: The study was approved by the ethics and research committee of the Kenyatta National Hospital/University of Nairobi (P328) on August 7, 2013. The informed consent forms were obtained from all participants in this study. All participants who responded to receive the oral examination and the questionnaire survey agreed with the purpose of this study and the use of the data.
: Not applicable.
: All authors declare not to have competing interests.
