http://www.brit-thoracic.org.uk /
http://www.cancernews.com/category.asp?cat=12
http://ats.ctsnetjournals.org /
http://www.surg.med.utoronto.ca/thor /
http://www.emedicine.com/radio/topic688.htm
http://medpics.findlaw.com/generateexhibit.php
http://animations.3d4medical.com/Thoracic-Vertebra-X-Ray-animation_AN1181.html
http://www.goremedical.com/tag /
http://nsmc.staywellsolutionsonline.com/RelatedItems/87,P08273
http://www.mdevidence.com/generateexhibit.php?ID=7981
http://smartimagebase.org/generateexhibit.php?ID=5054
http://www.indexedvisuals.com/scripts/ivstock/pic.asp?id=601-011
http://centegra.org/Content.asp?PageID=P08258