A randomized trial of anticoagulation with warfarin and of alternating chemotherapy in extensive small-cell lung cancer by the Cancer and Leukemia Group - Chahinian, A P; Propert, K J; Ware, J H; Zimmer, B; Perry, M C; Hirsh, V; Skarin, A; Kopel, S (Br J Clin Oncol, 1989)