Tassie, E., Scotland, G., Brittenden, J., Cotton, S. C., Elders, A., Campbell, M. K., …on behalf of the CLASS study team. (2014). Cost-effectiveness of ultrasound-guided foam sclerotherapy, endovenous laser ablation or surgery as treatment for primary varicose veins from the randomized CLASS trial: Cost-effectiveness of primary varicose vein treatments. British journal of surgery, 101(12), 1532-1540. https://doi.org/10.1002/bjs.9595