Umehara, Kengo
Yama, Kaori
Koike, Nozomi
Takayama, Shintarou
Wakamoto, Azusa
Hatuyama, Tae
Kobayashi, Michiya
Sato, Hideki
Article History
Received: 6 April 2020
Accepted: 22 September 2020
First Online: 6 October 2020
Ethics approval and consent to participate
: This study was approved (approval no. 25-1) by the ethical review board of the Sapporo Minami-Sanjo Hospital in accordance with the Ethical Guidelines for Medical and Health Research Involving Human Subjects.
: Not applicable.
: The authors declare that they have no competing interests.