Text and Data Mining valid from 2019-02-18
Received: 21 November 2018
Accepted: 4 February 2019
First Online: 18 February 2019
Change Date: 8 April 2019
Change Type: Correction
Change Details: The correct name of the corresponding author should be “Takaki Yoshikawa”, and not “Takaki Yoshiaki” as given in the original publication of the article.
Compliance with ethical standards
: The authors have no conflicts of interest to declare in relation to this article.
: This study was conducted with the approval of the National Cancer Center Hospital Ethical Committee (No: 2017-077).