Sumino, Takanobu
Tomita, Tetsuya
Sugamoto, Kazuomi
Yamazaki, Takaharu
Okazaki, Ken
Article History
Received: 9 October 2019
Accepted: 10 January 2020
First Online: 17 February 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of institutional research committee, Nihon University Hospital and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. All included patients provided written consent before being admitted into the study.
: Not applicable.
: The authors declare that they have no competing interests.