http://www.asahi.com/articles/ASH185JVNH18ULFA024.html

http://headlines.yahoo.co.jp/hl?a=20150112-00010000-tomamin-hok

http://www.amazon.co.jp/-/dp/479725405X

http://www3.nhk.or.jp/news/html/20150112/k10014609981000.html

http://www.mhlw.go.jp/stf/seisakunitsuite/bunya/kenkou_iryou/iryou/i-anzen/sanka-iryou/index.html