By browsing these 8 selected studies, we found that serum creatine, serum calcium, serum phosphorus, serum albumin, hemoglobin, β2M (β2 microglobulin), systolic blood pressure, diastolic blood pressure, lupus erythematosus, APD (automated PD), HD (hemodialysis), fungus related peritonitis, CAD (coronary artery disease), etc, were mentioned in 2 studies. Here, B2M is linked to coronary artery disorder.