Murakawa, Yasuko
Sakayori, Masato
Otsuka, Kazunori
Article History
Received: 24 July 2018
Accepted: 20 May 2019
First Online: 3 June 2019
Ethics approval and consent to participate
: The approval by the ethics committee of Miyagi Cancer Center was obtained for this 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.According to the local ethics policy for retrospective analysis of our own anonymized clinical data, the information of this study and a way of opt-out were indicated in a website and informed consent was obtained from all patients. Therefore, participants did not provide written or verbal consent, and this study was approved by the ethics committee of Miyagi Cancer Center. (Reference number: No.3, May 26, 2017).
: Not applicable.
: The authors declare that they have no competing interests.