1. Diagnosis of chronic venous disease of the lower extremities: the ‘CEAP’ classification [see comments];Kistner;Mayo Clinic Proceedings,1996
2. A study of tourniquets in the investigation of venous insufficiency;McMullin;Phlebology,1991
3. Uber die Operation der Unterschenkelvaricen nach Trendelenburg;Perthes;Deutsch Med Wehrschr,1895
4. Venous insufficiency and its recognition in practice;Santler;Z Haut Geschlechtskr,1969
5. Reflux diagnosis with Doppler ultrasound (monograph);Schultz-Ehrenburg,1989