Søby, S.; Gothelf, A.; Gyldenkerne, N.; Bentzen, J.; Nowicka-Matus, K.; Tramm, T.; Grau Eriksen, J. Efficacy of Nivolumab As Second Line Treatment for Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma: A National DAHANCA Cohort Study. AO 2022, 61, 972-978.