OPTIMIZATION OF THE INDICATIONS FOR SURGICAL TREATMENT AND CHOICE OF SURGERY VOLUME IN PATIENTS WITH NODULAR ENDEMIC GOITER AND AUTOIMMUNE THYROIDITIS by Michael I. SHEREMET, Larysa P. SYDORCHUK, Viktor O. SHIDLOVSKYI, Oleksandr V. SHIDLOVSKYI, Dragos CRETOIU, Oleg V. TRIBUSHNYI, Yan V. GYRLA, Oleksandr V. BILOOKYI, Oleksandr V. LAZARUK, Andryi I. POPOVYCH, Oksana Y. OLINIK, Tetyana Y. LAZARUK, Galyna Y. STELMAKH