Saito H, Ohta A, Abe E, Kaidu M, Shioi M, Nakano T, Oshikane T, Tanaka K, Maruyama K, Kushima N, et al. Definitive chemoradiotherapy with low-dose continuous 5-fluorouracil reduces hematological toxicity without compromising survival in esophageal squamous cell carcinoma patients. Clinical and translational radiation oncology. 2018. 9. 12-17