Text and Data Mining valid from 2018-05-24
Received: 31 January 2018
Accepted: 9 May 2018
First Online: 24 May 2018
Ethics approval and consent to participate
: Ethics were approved by the institutional review board of the Mie University Hospital (Tsu, Mie, Japan; IRB reference number: 3110) and Iwasaki Hospital (Tsu, Mie, Japan; IRB reference number: 2015–1201). Written informed consent was obtained from all participants.
: The authors declare that they have no competing interests.
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