A.V. DUBOVAYA1, Yu.V. NAUMENKO1, 2 1M. Gorky Donetsk National Medical University, Donetsk 2V.K. Gusak Institute of Urgent and Regenerative Surgery, Donetsk   Contact: Dubovaya A.V. ― MD, Professor of the Department of Propaedeutics in Pediatrics Address: 16 Ilyich Avenue, 283003, Donetsk, Ukraine, e-mail: dubovaya_anna@mail.ru  The article presents the results of evaluating the effectiveness of vitamin D3 […]