Tsuruoka, Tsutomu
Ishikawa, Kazuki
Hosoe, Tomoo
Davaajab, Darikhand
Duvjir, Suvd
Surenjav, Unursaikhan
Article History
Received: 5 February 2017
Accepted: 10 October 2017
First Online: 23 October 2017
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.