[Role of venous valves in formation of varicose veins].
D006801:Humans; D014648:Varicose Veins / Q000209:etiology*; D055422:Venous Valves
VARICOSE VEINS/etiology and pathogenesis
Rol' venoznykh klapanov v proiskhozhdenii varikoznogo rasshireniia ven.