IGF-1R expression is associated with HPV-negative status and adverse survival in head and neck squamous cell cancer by Dale, OT, Aleksic, T, Shah, KA, Han, C, Mehanna, H, Rapozo, DCM, Sheard, JDH, Goodyear, P, Upile, NS, Robinson, M, Jones, TM, Winter, S, Macaulay, VM