Uchida, Kenichiro
Nishimura, Tetsuro
Hagawa, Naohiro
Kaga, Shinichiro
Noda, Tomohiro
Shinyama, Naoki
Yamamoto, Hiromasa
Mizobata, Yasumitsu
Article History
Received: 30 October 2019
Accepted: 8 April 2020
First Online: 16 April 2020
Ethics approval and consent to participate
: As this was a retrospective study, the written informed consent was not able to be obtained from the patients. Under considering these conditions, the institutional ethical review board of Osaka City University waived the need for informed consent and approved for this study [Approval number: 4387].
: Not applicable for this study.
: The authors declare that they have no competing interests.