Text and Data Mining valid from 2019-05-28
Received: 15 November 2018
Accepted: 17 May 2019
First Online: 28 May 2019
Ethics approval and consent to participate
: This study was carried out in accordance with the principles of the Declaration of Helsinki. The Research Ethics Committee of Kobe Gakuin University approved the study (Approval No. HEB100806–1). Informed consent was obtained from all participants prior to participation.
: Not applicable.
: The authors declare that they have no competing interests.
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