Nagata, Yusuke
Kato, Ken
Miyamoto, Takahiro
Hirano, Hidekazu
Shoji, Hirokazu
Iwasa, Satoru
Honma, Yoshitaka
Takashima, Atsuo
Hamaguchi, Tetsuya
Matsushita, Hiromichi
Nagashima, Kengo
Saruta, Masayuki
Boku, Narikazu
Article History
Received: 26 July 2019
Accepted: 4 March 2020
First Online: 6 April 2020
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: This study was reviewed and approved by the Institutional Review Board in National Cancer Center Hospital in Japan, number 2017-229. The Institutional Review Board decided that individual written or verbal consent could be waived because of the retrospective and observational nature of the current study. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.