Data for demographics, comorbidities, medications and laboratory results are collected from the patients' medical records. Variables that will be studied are: age, gender, months on dialysis, residual diuresis, BMI, urea reduction ratio (URR), diabetes, hypertension, smoking, hyperlipidemia, calcium and non-calcium-based phosphate binders, cinacalcet, alfacalcidol, AC-24 score, dp-ucMGP level, albumin, coronary artery disease, mean of calcium, phosphorus and parathyroid hormone (PTH).