Venous insufficiency ( a failure of the valves in the <e1>veins</e1> of the <e2>leg</e2> that causes congestion and slowing of blood circulation in the veins ).
Venous insufficiency ( a
Venous insufficiency ( a failure of the valves in the veins of the leg that causes congestion and slowing of blood circulation in the veins ).
<triplet> veins <subject> leg <object> Component-Whole(e1,e2)