Kawashita, Yumiko
Kitamura, Masayasu
Soutome, Sakiko
Ukai, Takashi
Umeda, Masahiro
Saito, Thoshiyuki
Article History
Received: 31 May 2021
Accepted: 16 September 2021
First Online: 28 September 2021
Declarations
:
: The trial was conducted in accordance with the Declaration of Helsinki (as revised in 2013). The study was approved by the Institutional Review Board (IRB) of Nagasaki University Hospital (approval number: 20122114). The need for informed consent was waived by Nagasaki University Hospital Clinical Research Ethics Committee because of the retrospective nature of the study. Moreover, the research plan was published on the homepage of the participating hospitals according to the instructions of the IRB in accordance with the guaranteed opt-out opportunity.
: Not applicable.
: The authors declare that they have no competing interests.