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Funding
Funding for this research was provided by:
the research grant of St Luke's International University Center for Clinical Epidemiology (Not applicable)
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Article History
Received: 12 January 2018
Accepted: 26 June 2018
First Online: 18 July 2018
Ethics approval and consent to participate
: This research conformed to the provisions of the Declaration of Helsinki and was approved by the ethics committee of Yodogawa Christian Hospital (Approved Number: NO1). Participants were informed ahead of time of the voluntary nature of survey participation and their freedom to withdraw from participation. Written consent was obtained from all participants prior to data collection.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
