Yamashita, Ken
Oka, Shiro
Tanaka, Shinji
Nagata, Shinji
Kuwai, Toshio
Furudoi, Akira
Tamura, Tadamasa
Kunihiro, Masaki
Okanobu, Hideharu
Nakadoi, Koichi
Kanao, Hiroyuki
Higashiyama, Makoto
Arihiro, Koji
Kuraoka, Kazuya
Shimamoto, Fumio
Chayama, Kazuaki
Article History
Accepted: 15 November 2018
First Online: 3 January 2019
Compliance with ethical standards
: This study was performed in accordance with the ethical standards in the 1964 Declaration of Helsinki and its later amendments.
: The authors declare that they have no conflicts of interest.