PD‐1 and PD‐L1 expression in HNSCC primary cancer and related lymph node metastasis – impact on clinical outcome

By S. Schneider, L. Kadletz, R. Wiebringhaus, L. Kenner, E. Selzer, T. Füreder, Orsolya Rajky, A. Berghoff, M. Preusser, G. Heiduschka. 2018