http://www.asahi.com/national/update/0420/SEB201304200002.html

http://news.livedoor.com/article/detail/7599072/

http://news.goo.ne.jp/article/yomiuri/nation/20130419-567-OYT1T00849.html?fr=rk

http://headlines.yahoo.co.jp/hl?a=20130420-00000008-mai-soci

http://mainichi.jp/area/hyogo/news/20130419ddlk28060390000c.html

http://headlines.yahoo.co.jp/hl?a=20130419-00000086-mai-soci