Prognostic impact of urokinase-type plasminogen activator and its inhibitor PAI-1 in completely resected gastric cancer - Nekarda, H; Schmitt, M; Ulm, K; Wenninger, A; Vogelsang, H; Becker, K; Roder, J D; Fink, U; Siewert, J R (Cancer Res, 1994)