GSTM1 and chronic obstructive pulmonary disease: CKD: chronic kidney disease; HD: hemodialysis; PD: peritoneal dialysis; DM: diabetes mellitus; ADPKD: autosomal dominant polycystic kidney disease; HTN: hypertension; HBV: hepatitis B virus; COPD: chronic obstructive pulmonary disease; AA: Amyloid A; CABG: coronary artery bypass graft; PAF: paroxysmal atrial fibrillation; WBC: white blood cell; Ly: lymphocyte count; CRP: C-reactive protein; Hb: hemoglobin; GCV: ganciclovir; VGCV: valganciclovir.