Asai, Yuichiro
Chiba, Hirofumi
Nishikiori, Hirotaka
Kamekura, Ryuta
Yabe, Hayato
Kondo, Shun
Miyajima, Satsuki
Shigehara, Katsunori
Ichimiya, Shingo
Takahashi, Hiroki
Article History
Received: 15 May 2019
Accepted: 15 October 2019
First Online: 6 November 2019
Ethics approval and consent to participate
: This study was conducted in accordance of the Declaration of Helsinki and approved by the Institutional Review Board of the Sapporo Medical University School of Medicine (approval number: 272–94). Written informed consents were obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.