Tabei, Yosuke
Fukui, Hiroko
Nishioka, Ayako
Hagiwara, Yuji
Sato, Kei
Yoneda, Tadashi
Koyama, Tamami
Horie, Masanori
Article History
Received: 19 July 2018
Accepted: 28 December 2018
First Online: 18 February 2019
Competing Interests
: H.F., A.N., Y.H., K.S., T.Y. and T.K. are employees of the sponsor of this study. However, this did not influence the objectivity of the study. The authors declare that they have no conflicts of interest.