Funding for this research was provided by:
Japanese Primary Care Association (28-02-001)
Received: 16 June 2017
Accepted: 12 December 2017
First Online: 24 January 2018
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This study was approved by the ethical review board of the Kawakita General Hospital. Written informed consent was obtained from all individual participants included in the study.
: Not applicable.
: The authors declare that they have no conflict of interest.
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