In our useful links are the best sites we have found-

TOS info:
http://www.medifocushealth.com/RT017/index.php
http://www.nismat.org/ptcor/thoracic_outlet/
http://tos-syndrome.com/newpage12.htm
http://tos-syndrome.com
http://www.cwce.com/feinbergarticles/tos.htm
http://www.doctorellis.com
http://www.vascularinstitute.com/Resource_TOS.htm
http://drbrantigan.com/about/index.htm
http://www.ecentral.com/members/rsanders/
http://www.tellmeabouttos.com
http://www.causeof.org/posture_tos.htm
http://intraspec.ca/tos.php

more info - TOS sticky link-
http://neurotalk.psychcentral.com/showthread.php?t=84