Name Info Provider Link
Varicose Veins free resource MedlinePlus Health Information https://medlineplus.gov/varicoseveins.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=18307205.ui
free resource Wiley https://onlinelibrary.wiley.com/doi/10.1002/uog.5271