Sougawa, Yukiko
Miyai, Nobuyuki
Utsumi, Miyoko
Miyashita, Kazuhisa
Takeda, Shintaro
Arita, Mikio
Article History
Received: 15 September 2019
Revised: 30 October 2019
Accepted: 12 November 2019
First Online: 18 December 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.