Nikolaychuk, M. A., and L. R. Shostakovych-Koretska. “DYNAMICS OF VITAMIN D IN BLOOD OF PATIENTS WITH CHRONIC VIRAL HEPATITIS WITH THE APPLICATION OF CHOLECALCIFEROL IN ANTI-VIRAL THERAPY”. Infectious Diseases – Infektsiyni Khvoroby, no. 4, Apr. 2022, pp. 32-35, doi:10.11603/1681-2727.2021.4.12837.