Lewandowski, T., Baginski, A., Malecha-Jedraszek, A., Mosiewicz, J., & Donica, H. (2016). The evaluation of 25(OH)D concentration in blood serum of chronic heart failure patients. Current Issues in Pharmacy and Medical Sciences, 29(3), 107-110. https://doi.org/10.1515/cipms-2016-0021