Elyasi, Sepideh, et al. “Evaluation of Correlation Between Serum Level of Dihydropyrimidine Dehydrogenase Enzyme and Capecitabine Induced Adverse Reaction”. Reports of Radiotherapy and Oncology, vol. 4, no. 1, Aug. 2018, pp. 1-6, https://waocp.com/journal/index.php/Reports-of-Radiotherapy-and-Onco/article/view/2326.