Combination Therapy of Intravenous Steroids and Orbital Irradiation is More Effective Than Intravenous Steroids Alone in Patients with Graves’ Orbitopathy - Oeverhaus, M; Witteler, T; Lax, H; Esser, J; Führer, D; Eckstein, A (Horm Metab Res, 2017)