Funding for this research was provided by:
Japan Society for the Promotion of Science (16J04125)
Article History
Received: 16 July 2018
Accepted: 10 October 2018
First Online: 29 October 2018
Ethics approval and consent to participate
: All participants gave their written informed consent after a complete explanation of this study and before participation. The study was performed in accordance with the guidelines of the Declaration of Helsinki and was approved by the ethics committee of Kyushu University.
: Not applicable
: The authors declare that they have no competing interest.
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