Ricci, S. 2013. Comment to: Catheter-directed foam sclerotherapy for insufficiency of the great saphenous vein: occlusion rates and patient satisfaction after one year, by Williamsson C, Danielsson P, Smith L. Phlebology 2012:1-6. Veins and Lymphatics. 2, 1 (Dec. 2013), 7. DOI:https://doi.org/10.4081/ByblioLab.2013.7.