Radiobiological doses, tumor, and treatment features influence on outcomes after epiescleral brachytherapy. A 20-year retrospective analysis from a single-institution: part II - Miguel, David; Frutos-Baraja, Jesús María de; Lopez-Lara Martín, Francisco; Saornil, María Antonia; García-Alvarez, Ciro; Alonso, Pilar; Diezhandino, Patricia (Journal of Contemporary Brachytherapy, 2018)