Kawabata, Atsuyuki
Yoshii, Toshitaka
Hirai, Takashi
Ushio, Shuta
Kaito, Takashi
Yamashita, Tomoya
Fujiwara, Hiroyasu
Nagamoto, Yukitaka
Matsuoka, Yuji
Suzuki, Hidekazu
Nishimura, Hirosuke
Terai, Hidetomi
Tamai, Koji
Tagami, Atsushi
Yamada, Syuta
Adachi, Shinji
Watanabe, Kei
Katsumi, Keiichi
Ohashi, Masayuki
Shibuya, Yohei
Harimaya, Katsumi
Kawaguchi, Kenichi
Yokoyama, Nobuhiko
Oishi, Hidekazu
Doi, Toshiro
Kimura, Atsushi
Inoue, Hirokazu
Inoue, Gen
Miyagi, Masayuki
Saito, Wataru
Nakano, Atsushi
Sakai, Daisuke
Nukaga, Tadashi
Ikegami, Shota
Shimizu, Masayuki
Futatsugi, Toshimasa
Ohtori, Seiji
Furuya, Takeo
Orita, Sumihisa
Imagama, Shiro
Ando, Kei
Kobayashi, Kazuyoshi
Kiyasu, Katsuhito
Murakami, Hideki
Yoshioka, Katsuhito
Seki, Shoji
Hongo, Michio
Kakutani, Kenichiro
Yurube, Takashi
Aoki, Yasuchika
Oshima, Masashi
Takahata, Masahiko
Iwata, Akira
Endo, Hirooki
Abe, Tetsuya
Tsukanishi, Toshinori
Nakanishi, Kazuyoshi
Watanabe, Kota
Hikata, Tomohiro
Suzuki, Satoshi
Isogai, Norihiro
Okada, Eijiro
Funao, Haruki
Ueda, Seiji
Shiono, Yuta
Nojiri, Kenya
Hosogane, Naobumi
Ishii, Ken
Article History
Received: 17 February 2020
Accepted: 23 June 2020
First Online: 1 July 2020
Ethics approval and consent to participate
: This study was approved by the ethics committee of all participating institutions. The need for informed consent was waived by the above ethics committees because the retrospective cohort study involved existing data and records at the time of investigation, and did not retain personal identifiers in the collected information.Ethics committee, Niigata University School of Medicine (approval number 2015–1385)Ethics committee, Osaka University School of Medicine (approval number 11360–3)Ethics committee, Tokyo Medical University (approval number 2605)Ethics committee, Osaka City University School of Medicine (approval number 3170)Ethics committee, Nagasaki University School of Medicine (approval number 17032715)Ethics committee, Tokyo Medical and Dental University (approval number M2016–055)Ethics committee, Kyushu University School of Medicine (approval number 28–359)Ethics committee, Jichi Medical University (approval number A13–82)Ethics committee, Kitasato University School of Medicine (approval number B16–34)Ethics committee, Osaka Medical College (approval number 2169)Ethics committee, Tokai University School of Medicine (approval number 16R-033)Ethics committee, Shinshu University School of Medicine (approval number 3456)Ethics committee, Chiba University School of Medicine (approval number 2481)Ethics committee, Nagoya University School of Medicine (approval number 2016–0177)Ethics committee, Kochi University School of Medicine (approval number 2016–116)Ethics committee, Kanazawa University School of Medicine (approval number 2015–075)Ethics committee, University of Toyama School of Medicine (approval number 21–22)Ethics committee, Akita University School of Medicine (approval number 1879)Ethics committee, Kobe University School of Medicine (approval number 160004)Ethics committee, Nihon University Itabashi Hospital (approval number RK-160913–21)Ethics committee, Hokkaido University School of Medicine (approval number 015–0396)Ethics committee, Iwate Medical University (approval number H28–88)Ethics committee, University of Tsukuba School of Medicine (approval number H27–133)Ethics committee, Hiroshima University School of Medicine (approval number Epi-139)Ethics committee, Keio University School of Medicine (approval number 20110141)
: Not applicable.
: The authors declare that they have no competing interests.