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