K. Ivanova, I. Manolova, M.-M. Ignatova, and M. Gulubova, “Immunohistochemical Expression of TGF-Î’1, SMAD4, SMAD7, TGFβRII and CD68-Positive TAM Densities in Papillary Thyroid Cancer”, Open Access Maced J Med Sci, vol. 6, no. 3, pp. 435–441, Mar. 2018.