Funding for this research was provided by:
National Hospital Organization (H28-NHO (MCR)-01)
Received: 13 March 2018
Accepted: 17 September 2018
First Online: 4 October 2018
Ethics approval and consent to participate
: Informed written consent was obtained from all participants. The Ethical Review Board, National Hospital Organization, Kyoto Medical Centre approved the study protocol.
: The authors declare that they have no competing interests.
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