Eremenko, N. N., Shikh, E. V., & Serebrova, S. Y. (2016). The dynamics of the parathyroid hormone level for the comparative evaluation of calcium absorption from the gastrointestinal tract. Patogenez (Pathogenesis), 14(4), 69-73. https://pathogenesis.pro/index.php/pathogenesis/article/view/100