Text and Data Mining valid from 2019-02-07
Received: 5 December 2018
Accepted: 24 January 2019
First Online: 7 February 2019
Ethics approval and consent to participate
: This study was approved by the institutional review board of Nagoya university Hospital, Japan (approval code: 2017-0290) and was registered in the UMIN-Clinical Trials Registry (UMIN trial ID: UMIN 000033158).
: Not applicable.
: The authors declare that they have no competing interests.
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