Liu, C., Wei, H., Hou, Y.- hong, Gao, Z.- lin and Zhang, Y.- jing 2021. Clinical efficacy evaluation of Erlotinib Combined with Concurrent Chemoradiotherapy in the treatment of locally advanced Pancreatic Cancer. Pakistan Journal of Medical Sciences. 38, 1 (Nov. 2021). DOI:https://doi.org/10.12669/pjms.38.1.4150.