Tanaka, Koji
Shimada, Hiroyuki
Mori, Ryusaburo
Nakashizuka, Hiroyuki
Hattori, Takayuki
Okubo, Yuko
Article History
Received: 24 November 2018
Accepted: 17 June 2019
First Online: 24 August 2019
Conflicts of interest
: K. Tanaka, None; H. Shimada, None; R. Mori, None; H. Nakashizuka, None; T. Hattori, None; Y. Okubo, None.