CP and Wilson disease: The diagnosis of WD was confirmed on the basis of abnormal copper metabolism parameters, including decreased serum ceruloplasmin (13.3 mg/dL [normal: 20–60]), elevated non-ceruloplasmin bound copper (NCC) calculated indirectly (16.1 μg/dL [normal: 5–15]), and increased 24-h urinary copper excretion (475 μg/24 h [normal: <50]).