North American Association for Laser Therapy http://www.naalt.org/

World Association for Laser Therapy http://www.walt.nu/

European Medical Laser Association http://www.emla-laser.com/

American Society for Laser Medicine and Surgery http://www.aslms.org/

Swedish Laser Medical Sociey http://www.laser.nu/

The International Society for Optical Engineering http://www.spie.org/home.html

Academy of Laser Dentistry http://www.laserdentistry.org/

European and American Societies for Photobiology http://www.pol-us.net/