Lechner, A., Schlößer, H., Rothschild, S. I., Thelen, M., Reuter, S., Zentis, P., et al. (2017). Characterization of tumor-associated T-lymphocyte subsets and immune checkpoint molecules in head and neck squamous cell carcinoma. Oncotarget, 8(27), 44418-44433. doi:10.18632/oncotarget.17901.