Adjuvant chemotherapy in curative resected colon carcinoma: 5-fluorouracil/leucovorin versus high-dose 5-fluorouracil 24-h infusion/leucovorin versus high-dose 5-fluorouracil 24-h infusion - Arkenau, H T; Rettig, K; Porschen, R (Int J Colorectal Dis, 2005)