Guda, B.B., V.V. Pushkarev, O.I. Kovzun, V.M. Pushkarev, and M.D. Tronko. “PCNA Expression As a Marker of Proliferation in Benign and Highly Differentiated Malignant Tumors of the Human Thyroid Gland (literature Review and Clinical Case)”. INTERNATIONAL JOURNAL OF ENDOCRINOLOGY (Ukraine) 15, no. 4 (February 1, 2019): 339–343. Accessed December 6, 2021. http://iej.zaslavsky.com.ua/article/view/174822.