M. B. S., S. K. H. B., N. K. Reddy M., S. Kalabhairav, and A. Reddy V., “Efficacy and safety of ultrasound guided foam sclerotherapy with sodium tetradecyl sulphate for residual and minor varicosities”, Int Surg J, vol. 4, no. 2, pp. 751–756, Jan. 2017.