Koike, Soichi
Matsumoto, Masatoshi
Ide, Hiroo
Kawaguchi, Hideaki
Shimpo, Masahisa
Yasunaga, Hideo
Funding for this research was provided by:
Ministry of Health, Labour and Welfare (H26 Research on Statistics and Information 001)
Japan Society for the Promotion of Science (JP16K00432)
Article History
Received: 2 April 2016
Accepted: 26 April 2017
First Online: 8 May 2017