Irinotecan in Combination With Fluorouracil in a 48-Hour Continuous Infusion As First-Line Chemotherapy for Elderly Patients With Metastatic Colorectal Cancer: A Spanish Cooperative Group for the Treatment of Digestive Tumors StudyJavier Sastre, Eduardo Díaz‐Rubio, B. Masutti et al.|Journal of Clinical Oncology|2005Cited by 98