Article History
Received: 11 August 2020
Accepted: 12 February 2021
First Online: 6 March 2021
Compliance with ethical standard
:
: Dr. Asaka and Dr. Kotooka have belonged to an endowed chair from Asahi Kasei corporation since 2017 to 2019, and 2017 to 2020, respectively. All authors have no any relationship with industry and financial associations within the past 12 months that might pose a conflict of interest in connection with the submitted article.
: The study protocol was approved by the institutional review board of Saga University Hospital. Reference number; 2018-10-expedite-03.