Microvascular invasion is associated with poor prognosis in renal cell carcinoma: a retrospective cohort study and meta-analysis oleh Jinbin Xu, Yiyuan Tan, Shuntian Gao, Weijen Lee, Yuedian Ye, Gengguo Deng, Zhansen Huang, Xiaoming Li, Jiang Li, Samun Cheong, Jinming Di