http://diamond.jp/articles/-/148115

https://headlines.yahoo.co.jp/hl?a=20171105-00000013-mai-soci

https://headlines.yahoo.co.jp/videonews/fnn?a=20171103-00000407-fnn-soci

https://www.nikkei.com/article/DGXMZO22336150X11C17A0000000/

http://www.courts.go.jp/about/databook/index.html