von Witzleben A, Fehn A, Grages A, EziC J, et al. Prospective longitudinal study of immune checkpoint molecule (ICM) expression in
immune cell subsets during curative conventional therapy of head and neck
squamous cell carcinoma (HNSCC). Int J Cancer 2020 Dec 17. doi: 10.1002/ijc.33446.
PMID: 33336372