Kobayashi, Seneki
Kubo, Toshikazu
Iwamoto, Yukihide
Fukushima, Wakaba
Sugano, Nobuhiko
Funding for this research was provided by:
Ministry of Health, Labour and Welfare
Article History
Received: 13 April 2018
Accepted: 4 May 2018
First Online: 12 May 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: We obtained institutional ethical approvals for this study.