Birthmarks.com
- http://www.birthmarks.com
- This site offers information and helpful sites related to various port-wine stain and other birthmarks, including contact information for physicians in this field.
Vascular Birthmarks Foundation
- http://www.birthmark.org/
- An international charitable organization that provides support and informational resources for individuals affected by hemangiomas, port wine stains and other vascular birthmarks and tumors. Also sponsors relevant research.