stimulants
http://www.asahi.com/national/update/0902/018.html
http://www.mainichi-msn.co.jp/chihou/tochigi/news/20040901ddlk09040008000c.html
http://headlines.yahoo.co.jp/hl?a=20040828-00000029-mailo-l21
http://hotwired.goo.ne.jp/news/news/technology/story/20040826301.html
http://www.kyoto-np.co.jp/article.php?mid=P2004082600110&genre=C1&area=Z10