Received: 17 December 2018
Accepted: 22 February 2019
First Online: 4 March 2019
Ethics approval and consent to participate
: In the previously published article [CitationRef removed], Takuya Fukuda, et al. has clearlystated that: the study was conducted in accordance with the Declaration of Helsinki. Informed consent was obtained from all Participants.
: Not applicable.
: Authors declare that they have no competing interests.
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