http://m-78.jp/news/n-4913/

https://www.youtube.com/watch?v=BYOGClmmeao

https://headlines.yahoo.co.jp/hl?a=20170730-00010001-bfj-soci&p=1

https://headlines.yahoo.co.jp/hl?a=20170730-00006424-bengocom-soci

https://mainichi.jp/articles/20170730/k00/00m/040/123000c

https://headlines.yahoo.co.jp/hl?a=20170725-00000017-jij_afp-sctch

http://gigazine.net/news/20170728-brain-cells-control-aging/

https://news.yahoo.co.jp/profile/author/sonodahisashi/comments/posts/15012531456584.bbea.17809

http://kounomaki.blog84.fc2.com/blog-entry-1033.html

https://www.youtube.com/watch?v=xeGGUyPJeWs

http://tjgig.com/karoushi_mycousin/

http://www.resonabank.co.jp/nenkin/info/economist/pdf/160325.pdf

http://yamagata-np.jp/news/201707/24/kj_2017072400549.php

https://www.kobe-np.co.jp/news/jiken/201707/0010412187.shtml

http://www3.nhk.or.jp/news/html/20170728/k10011078051000.html https://mainichi.jp/articles/20170728/k00/00e/040/251000c

http://www.rouhyo.org/news/590/

https://www.tabisland.ne.jp/news/tax/2017/0727.html

https://headlines.yahoo.co.jp/hl?a=20170727-00000045-asahi-soci

http://www3.nhk.or.jp/news/html/20170726/k10011075581000.html

https://this.kiji.is/263124304344598006

https://withnews.jp/article/f0170327003qq000000000000000W06910201qq000014907A

http://bunshun.jp/articles/-/3474

http://www.yomiuri.co.jp/national/20170726-OYT1T50039.html

http://gendai.ismedia.jp/articles/-/52333 奈良学園大学 https://naragakudaiunion.jimdo.com/%E7%B5%8C%E9%81%8E%E3%81%A8%E4%B8%BB%E5%BC%B5/

https://mainichi.jp/articles/20170727/k00/00m/040/046000c

https://this.kiji.is/262524726369648646

http://www3.nhk.or.jp/news/html/20170724/k10011072391000.html

http://www.yomiuri.co.jp/national/20170724-OYT1T50088.html

https://headlines.yahoo.co.jp/hl?a=20170725-00000056-mai-soci

http://www.shinmai.co.jp/news/nagano/20170724/KT170721ETI090013000.php