Received: 25 March 2020
Accepted: 16 September 2020
First Online: 2 October 2020
Ethics approval and consent to participate
: The study was conducted in accordance with the tenets of the Declaration of Helsinki. The study was approved by the certified review board of the National Center for Global Health and Medicine (NCGM-G-003361-00). Given that this study was a retrospective study, informed consent was waived. However, we did guarantee the opportunity by opt-out. We described the disclosure document about this study and obtained informed consent from subjects by displaying it in the hospital as per the approval date until 31st January 2020 approved by the certified review board.
: Not applicable.
: YT has received grants from Boehringer Ingelheim, Chugai Pharmaceutical, outside of this study. The remaining authors declared no competing interests for this work.