Text and Data Mining valid from 2018-10-05
Received: 12 August 2017
Accepted: 26 September 2018
First Online: 5 October 2018
Ethics approval and consent to participate
: This study is a retrospective cohort study, carried out by the opt-out method of a poster presentation at Kyoto-Katsura Hospital. The Ethics Committee of Kyoto-Katsura Hospital approved this retrospective study, and it was exempted from obtaining informed consent from each patient in consideration of the aim and methods of the study (Approval number: 501).
: Not applicable.
: The authors declare that they have no competing interests.
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