• http://www.ucl.ac.uk/~rehk999/pdcs.htm
• More Vein Info - http://www.medi-data.co.uk/
• Veinsurg
• David Tibbs

National Library of Medicine (Medline Search):

• http://www.nlm.nih.gov
• http://www.ncbi.nlm.nih.gov/PubMed
• http://www.igm.nlm.nih.gov

Academic websites that have acknowledged the quality of our site:

• American Venous Forum
• Brazilian Society of Angiology & Vascular Surgery
• German Society of Phlebology