Please Cite OSkirc in your works: Xie L, Wang Q, Dang Y, Ge L, Sun X, Li N, Han Y, Yan Z, Zhang L, Li Y, Zhang H, Guo X. OSkirc: a web tool for identifying prognostic biomarkers in kidney renal clear cell carcinoma. Future Oncol. 2019 Aug 1. doi: 10.2217/fon-2019-0296. PMID: 31368353

DFI and PFI were defined by Liu et al. [Liu, J., Lichtenberg, T., Hoadley, K. A. et al. (2018). An integrated TCGA pan-cancer clinical data resource to drive high-quality survival outcome analytics. Cell,173(2), 400-416.]