MicroRNA-21 in peripheral blood mononuclear cells as a novel biomarker in the diagnosis and prognosis of prostate cancer. - Yang, Bing; Liu, Zheng; Ning, Hao; Zhang, Kai; Pan, Dongliang; Ding, Kejia; Huang, Wei; Kang, Xin-Li; Wang, Yang; Chen, Xiang (Cancer Biomarkers, 2016)