1. Global AIDS epidemic continues to grow
http://www.who.int/hiv/mediacentre/news62/en/index.html
2. Health education and intervention: an effective way of controlling AIDS epidemic;Yi;J. Med. Forum,2004
3. Preventing HIV infection
http://www.unfpa.org/hiv/gyp/index.htm
4. Young people at risk: HIV/AIDS among America’s Youth
http://www.cdc.gov/hiv/pubs/facts/youth.htm