Takeyama, Hiroshi http://orcid.org/0000-0003-1672-8349
Ikeda, Kimimasa
Danno, Katsuki
Nishigaki, Takahiko
Yamashita, Masafumi
Taniguchi, Hirokazu
Oka, Yoshio
Article History
Accepted: 23 September 2019
First Online: 30 October 2019
Compliance with ethical standards
: The study protocol was approved by the Institutional Review Board of Minoh City Hospital (IRB No. R01-B4) and was conducted according to the ethical guidelines of the Declaration of Helsinki.
: The authors declare that they have no conflicts of interest.