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Article History

Received: 14 February 2018

Accepted: 13 September 2018

First Online: 29 September 2018

Ethics approval and consent to participate

: The experimental protocol was approved by the ethics committee of the Institutional Review Board of the Prefectural University of Kumamoto. All subjects provided written consent for their participation after they were fully informed about the study. The investigation was performed in compliance with the Declaration of Helsinki.

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