Kobayashi, Seiji
Amano, Hoichi
Terawaki, Hiroyuki
Ogura, Makoto
Kawaguchi, Yoshindo
Yokoo, Takashi
Article History
Received: 9 July 2018
Accepted: 23 July 2019
First Online: 6 August 2019
Ethics approval and consent to participate
: The study protocols conformed to the provisions of the Declaration of Helsinki and was approved by the ethical committee of the Jikei University Kashiwa Hospital (Approval number 7058) and Kanagawa Prefecture Shiomidai Hospital (Approval number 2706).Written informed consent for participation was waived because of the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.