- Effects of ZK-807834, a novel inhibitor of factor Xa, on arterial and venous thrombosis in rabbits. Abendschein, D.R., Baum, P.K., Martin, D.J., Vergona, R., Post, J., Rumennik, G., Sullivan, M.E., Eisenberg, P.R., Light, D.R. J. Cardiovasc. Pharmacol. (2000)