Lewandowski, T.; Baginski, A.; Malecha-Jedraszek, A.; Mosiewicz, J.; Donica, H. The Evaluation of 25(OH)D Concentration in Blood Serum of Chronic Heart Failure Patients. Curr. Issues Pharm. Med. Sci. 2016, 29 (3), 107-110. https://doi.org/10.1515/cipms-2016-0021.