1. Prevalence of chronic leg ulceration and severe chronic venous disease in Western countries;Callam;Phlebology,1992
2. Aetiology of chronic leg ulcers;Baker;Eur J Vasc Surg,1992
3. Costs of venous ulcers: from maintenance therapy to investment programmes;Bosanquet;Phlebology,1992
4. Long saphenous incompetence as a cause of venous ulceration;Sethia;Br J Surg,1984
5. Popliteal vein valve transplantation for deep venous valvular reflux: rationale, method, and long-term clinical, hemodynamic, and anatomic results;O'Donnell,1991