Analysis of the Intratumoral Adaptive Immune Response in Well Differentiated and Dedifferentiated Retroperitoneal Liposarcoma oleh William W. Tseng, Shruti Malu, Minying Zhang, Jieqing Chen, Geok Choo Sim, Wei Wei, Davis Ingram, Neeta Somaiah, Dina C. Lev, Raphael E. Pollock, Gregory Lizée, Laszlo Radvanyi, Patrick Hwu