Hashimoto, Koji
Harada, Makoto
Yamada, Yosuke
Sugano, Mitsutoshi
Minagawa, Tomonori
Ogawa, Teruyuki
Ishizuka, Osamu
Kamijo, Yuji
Article History
Received: 26 July 2019
Accepted: 26 December 2019
First Online: 13 January 2020
Ethics approval and consent to participate
: The study protocol was approved by the institutional review board of the ethical committee at Shinshu University Hospital (approval no. 3384) and was conducted in accordance with the principles contained within the Declaration of Helsinki as revised in 2013.
: Not applicable.
: The authors declare that they have no competing interests.