Please Cite OSpaad in your works: Zhang G, Wang Q, Yang M, Yao X, Qi X, An Y, Dong H, Zhang L, Zhu W, Li Y, Guo X. OSpaad: An online tool to perform survival analysis by integrating gene expression profiling and long-term follow-up data of 1319 pancreatic carcinoma patients. Mol Carcinog. 2020 Jan 8. doi: 10.1002/mc.23154.

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.]