Funding for this research was provided by:
Japan Society for the Promotion of Science (23500614, 26350631)
Received: 14 September 2017
Accepted: 10 January 2018
First Online: 7 February 2018
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Kitasato University School of Allied Health Sciences and was conducted in accordance with the standards set forth by the latest revision of the Declaration of Helsinki. All patients received a detailed explanation of the study protocol and provided informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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