Rai, D.B. Motion of Venous Valves in Humans: A New Discovery, International Journal of angiology,15 :135-140,2006 04 September Rai, D.B. Lerner, R. Chronic venous insufficiency disease its etiology Melbourne, Fawkner Park Leave a Comment Cancel ReplyComment* Name* Email * Website Save my name, email, and website in this browser for the next time I comment.