1. Beebe-Dimmer JL, Pfeifer JR, Engle JS, Schottenfeld D. The epidemiology of chronic venous insufficiency and varicose veins. Ann Epidemiol. 2005; 15:175–184.
2. Cesarone MR, Belcaro G, Nicolaides AN, Geroulakos G, Griffin M, Incandela L, et al. 'Real' epidemiology of varicose veins and chronic venous diseases: the San Valentino Vascular Screening Project. Angiology. 2002; 53:119–130.
3. Brand FN, Dannenberg AL, Abbott RD, Kannel WB. The epidemiology of varicose veins: the Framingham Study. Am J Prev Med. 1988; 4:96–101.
4. Engelhorn C, Engelhorn A, Salles-Cunha S, Picheth E, Castro N Jr, Dabul N Jr, et al. Relationship between reflux and greater saphenous vein diameter. J Vasc Technol. 1997; 21:167–171.
5. Mendoza E, Blattler W, Amsler F. Great saphenous vein diameter at the saphenofemoral junction and proximal thigh as parameters of venous disease class. Eur J Vasc Endovasc Surg. 2013; 45:76–83.
6. Navarro TP, Delis KT, Ribeiro AP. Clinical and hemodynamic significance of the greater saphenous vein diameter in chronic venous insufficiency. Arch Surg. 2002; 137:1233–1237.
7. Coleridge-Smith P, Labropoulos N, Partsch H, Myers K, Nicolaides A, Cavezzi A. Duplex ultrasound investigation of the veins in chronic venous disease of the lower limbs: UIP consensus document. Part I. Basic principles. Eur J Vasc Endovasc Surg. 2006; 31:83–92.
8. Parés JO, Juan J, Tellez R, Mata A, Moreno C, Quer FX, et al. Varicose vein surgery: stripping versus the CHIVA method: a randomized controlled trial. Ann Surg. 2010; 251:624–631.
9. Cappelli M, Lova RM, Ermini S, Turchi A, Bono G, Bahnini A, et al. Ambulatory conservative hemodynamic management of varicose veins: critical analysis of results at 3 years. Ann Vasc Surg. 2000; 14:376–384.
10. Sarin S, Sommerville K, Farrah J, Scurr JH, Coleridge Smith PD. Duplex ultrasonography for assessment of venous valvular function of the lower limb. Br J Surg. 1994; 81:1591–1595.
11. Labropoulos N, Tiongson J, Pryor L, Tassiopoulos AK, Kang SS, Ashraf Mansour M, et al. Definition of venous reflux in lower-extremity veins. J Vasc Surg. 2003; 38:793–798.
12. van Bemmelen PS, Mattos MA, Hodgson KJ, Barkmeier LD, Ramsey DE, Faught WE, et al. Does air plethysmography correlate with duplex scanning in patients with chronic venous insufficiency? J Vasc Surg. 1993; 18:796–807.
13. Jäger K, Seifert H, Bollinger A. M-mode echovenography: a new technique for the evaluation of venous wall and valve motion. Cardiovasc Res. 1989; 23:25–30.
14. Goldman MP, Fronek A. Anatomy and pathophysiology of varicose veins. J Dermatol Surg Oncol. 1989; 15:138–145.
15. Jeanneret C, Jager KA, Zaugg CE, Hoffmann U. Venous reflux and venous distensibility in varicose and healthy veins. Eur J Vasc Endovasc Surg. 2007; 34:236–242.
16. Lattimer CR, Azzam M, Kalodiki E, Makris GC, Geroulakos G. Saphenous pulsation on duplex may be a marker of severe chronic superficial venous insufficiency. J Vasc Surg. 2012; 56:1338–1343.
17. Murphy MA, Hands L. Is arteriovenous shunting involved in the development of varicosities? A study of the intraluminal pressure and oxygen content in varicose veins. Phlebology. 2008; 23:137–141.
18. Lee W, Chung JW, Yin YH, Jae HJ, Kim SJ, Ha J, et al. Three-Dimensional CT venography of varicose veins of the lower extremity: image quality and comparison with doppler sonography. AJR Am J Roentgenol. 2008; 191:1186–1191.
19. Min SK, Kim SY, Park YJ, Lee W, Jung IM, Lee T, et al. Role of three-dimensional computed tomography venography as a powerful navigator for varicose vein surgery. J Vasc Surg. 2010; 51:893–899.
20. Mdez-Herrero A, Gutierrez J, Camblor L, Carreno J, Llaneza J, Rguez-Olay J, et al. The relation among the diameter of the great saphenous vein, clinical state and haemodynamic pattern of the saphenofemoral junction in chronic superficial venous insufficiency. Phlebology. 2007; 22:207–213.
21. Gibson K, Meissner M, Wright D. Great saphenous vein diameter does not correlate with worsening quality of life scores in patients with great saphenous vein incompetence. J Vasc Surg. 2012; 56:1634–1641.