1. The Merck Manual of Diagnosis and Therapy: Seventeenth Ed. 1999, edited Beers MH, Berkow R, Merck & Co Inc, NJ.
2. Beebe, HG, Bergan JJ, Bergquist D, Eklof B, Eriksson I, Goldman MP, et al. Classification and grading of chronic venous disease in the lower limbs: A consensus statement. Phlebology 1995; 10:42‑45.
3. Goldman, MP. Sclerotherapy: Treatment of varicose and telangiectatic leg veins. Mosby, Inc. 1991.
4.