A randomized comparison of cisplatin alone or in combination with methotrexate, vinblastine, and doxorubicin in patients with metastatic urothelial carcinoma: a cooperative group study. - Loehrer Sr,P.J.; Einhorn,L.H.; Elson,P.J.; Crawford,E.D.; Kuebler,P.; Tannock,I.; Raghavan,D.; Stuart-Harris,R.; Sarosdy,M.F.; Lowe,B.A. (J Clin Oncol, 1992)