1. The use of photoplethysmography in the assessment of venous insufficiency. A comparison to venous pressure measurements;Abramowitz;Surgery,1979
2. The treatment of deep venous insufficiency by femoral valve transposition;Queral;Surgery,1980
3. Significance of popliteal reflux in relation to ambulatory venous pressure and ulceration;Shull;Arch Surg,1979
4. Doppler ultrasound in the investigation of venous insufficiency;Nicolaides,1981
5. Calf volume plethysmography;Nicolaides,1981