http://news.goo.ne.jp/article/mainichi/nation/20130720k0000m040033000c.html?fr=rk

http://www.asahi.com/national/update/0720/TKY201307190494.html

http://www.news-postseven.com/archives/20130716_199612.html

http://headlines.yahoo.co.jp/hl?a=20130719-00000078-jij-soci

http://www.yomiuri.co.jp/national/news/20130719-OYT1T00225.htm

http://www.yomiuri.co.jp/national/news/20130719-OYT1T00568.htm

http://headlines.yahoo.co.jp/hl?a=20130719-00000005-at_s-l22