International

http://www.tobaccofacts.org/ Tobacco Facts (Canada)

http://www.who.int/tobacco/en/index.html World Health Organization, Tobacco Free Initiative (TFI)

http://www.smokefree.gov/guide/ Online Guide to Quitting

http://www.lungusa.org/site/pp.asp?c=dvLUK9O0E&b=22542 American Lung Association: information on effects of smoking and quitting

http://www.cdc.gov/tobacco/index.htm Tobacco information and prevention source operated by one of the unit of CDC of US