A cohort of long-surviving patients affected by small and medium uveal melanoma treated with ruthenium-106 plaque brachytherapy - Concetta Laliscia; Franco Perrone; Francesca Guido; Federica Cresti; Taiusha Fuentes; Fabiola Paiar; Guglielmo Pellegrini; Federica Genovesi Ebert (Contemporary Oncology)