Avelumab for platinum-ineligible/refractory recurrent and/or metastatic squamous cell carcinoma of the head and neck: phase Ib results from the JAVELIN Solid Tumor trial oleh Nicolas Penel, Ulrich Keilholz, Ani Balmanoukian, Manish R Patel, Sanjay Goel, Keun-Wook Lee, Alain Mita, Christophe Le Tourneau, Deborah J Wong, Patrick Schöffski, Marcis Bajars, Amaury Daste, Hans Juergen Grote, Dongli Zhou, Michael S Gordon, Martin Gutierrez, Damien Vansteene, Joël Guigay