A Retrospective Study of Gemcitabine and Carboplatin With or Without Intravenous Vitamin C on Patients With Advanced Triple-Negative Breast Cancer oleh Junwen Ou PhD, Xinyu Zhu MS, Hongyu Zhang BS, Yanping Du MS, Pengfei Chen BS, Junhua Wang BS, Xiufan Peng MS, Shuang Bao BS, Xinting Zhang MS, Tao Zhang BS, Clifford L. K. Pang PhD