Received: 13 July 2021
Accepted: 14 August 2021
First Online: 26 October 2021
: The second author, Yasuo Takehara, is an endowed chair of a department financially supported by a private company; however, the status is irrelevant to the contents of this paper. Other authors declare that there are no conflicts of interest related to the contents of the article.
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. Informed consent was obtained from all patients for being included in the study.