Study protocol for an open-label, single-arm, phase Ib/II study of combination of toripalimab, nab-paclitaxel, and gemcitabine as the first-line treatment for patients with unresectable pancreatic ductal adenocarcinoma. - Shui, Lin; Cheng, Ke; Li, Xiaofen; Shui, Pixian; Zhou, Xiaohan; Li, Jian; Yi, Cheng; Cao, Dan (BMC Cancer, 2020)