Miyazaki, Koichi http://orcid.org/0000-0003-0196-5624
Hanaoka, Kohei
Kaida, Hayato
Chiba, Yasutaka
Ishii, Kazunari
Article History
Received: 12 September 2019
Accepted: 8 November 2019
First Online: 16 December 2019
Ethics approval and consent to participate
: This study was conducted according to the Declaration of Helsinki, and was approved by the Institutional Review Board of Kindai University. The need for written informed consent was waived for this retrospective study.
: Not applicable
: The authors declare that they have no competing interests.