1. Australian Society of Orthodontists. www.aso.org.au
2. American Association of Orthodontists. www.aaortho.org
3. American Journal of Orthodontics and Dentofacial Orthopedics. Very highly regarded journal. Non-subscribers can view summaries online. www.journals.elsevierhealth.com/periodicals/ymod
4. Angle Orthodontist. A very highly regarded journal. Non-subscribers can view online. www.angleorthodontist.org
5. Cochrane Collaboration. The Cochrane Collaboration is an excellent guide to all areas of health, with conclusions drawn only from independent objective research. www.cochrane.org
6. European Journal of Orthodontics. Non-subscribers can view some material online. www.ejo.oxfordjournals.org
7. University of Washington. www.dental.washington.edu/departments/ortho/index.php
8. World Federation of Orthodontists. www.wfo.org
9. World Journal of Orthodontics. Non-subscribers can view summaries online. www.quintpub.com/journals/wjo/gp.php?journal_name=WJO&name_abbr=WJO