Acknowledgements
The authors thank the investigators and institutions involved in Hokushin Ganpro database project: Kanazawa Medical University, Kanazawa University, Shinshu University School of Medicine, Toyama University Hospital, University of Fukui, Ishikawa prefectural central Hospital, Toyama prefectural central Hospital, Kurobe city Hospital, Toyama rousai Hospital, Kouseiren Takaoka Hospital, Takaoka city Hospital, Tonami general Hospital, Toyama city Hospital, National Hospital organization Kanazawa medical center, Fukui prefectural central Hospital, Tsuruga medical center, Saku central Hospital advanced center, Suwa red cross Hospital, Nagano red cross Hospital, Nagano city Hospital, Nagano children’s Hospital, and Aizawa Hospital.
Author Contributions
Conception/design: Hidetaka Uramoto
Provision of study material or patients: Hidetaka Uramoto, Tomoya Takiguchi, Tomonobu Koizumi, Azusa Tanimoto, Ryuji Hayashi, Yozo Nakazawa, Kenichi Ito, Mitsutoshi Nakada, Yasuo Hirono, Yoshikazu Nishino, Seiji Yano
Collection and/or assembly of data: Hidetaka Uramoto, Tomoya Takiguchi, Tomonobu Koizumi, Azusa Tanimoto, Ryuji Hayashi, Yozo Nakazawa, Kenichi Ito, Mitsutoshi Nakada, Yasuo Hirono, Yoshikazu Nishino, Seiji Yano
Data analysis and interpretation: Hidetaka Uramoto, Tomonobu Koizumi, Yoshikazu Nishino, Seiji Yano
Manuscript writing: Hidetaka Uramoto
Final approval of manuscript: Hidetaka Uramoto, Tomoya Takiguchi, Tomonobu Koizumi, Azusa Tanimoto, Ryuji Hayashi, Yozo Nakazawa, Kenichi Ito, Mitsutoshi Nakada, Yasuo Hirono, Yoshikazu Nishino, Seiji Yano
Funding information
This study was supported by a Grand-in-Aid from the ministry of education, culture, sports, science and technology-japan under the cancer professional training plan to meet various emerging needs.
Data availability
The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions.
Code availability Not applicable.
Compliance with ethical standards
Conflict of Interest
TK received honoraria for AstraZeneca Co. LTD, and Ono Pharmaceutical Co., LTD. MN received honoraria for DAIICHI SANKYO COMPANY and Eisai Japan Co and received a research grant from Eisai Japan Co. All other authors declared no conflict of interest.
Ethics approval and consent to participate
The present protocol was approved by the Kanazawa University Institutional Review Board (IRB) (reference number: 2750-2), Kanazawa Medical University (I328), and the IRBs at Hokushin Ganpro database project, all of which granted a waiver of consent for the study.
Consent for publication Not applicable.