http://zhidao.baidu.com/question/31939801.html?fr=qrl3
http://www.wangqiang.org/sy-cq.html
http://www.healthworld.com.cn/content/son_content.asp?conid=2117
http://news.xinhuanet.com/life/2006-10/30/content_5268073.htm
http://www.uibe.edu.cn/upload/up_tyb/kcjj-tycsh/2.03.htm
http://www.cctv.com/program/wnfw/20060313/100571.shtml
