1. From the Department of Neurology (B.J., J.M., H.-J.K.), Seoul National University Hospital and Seoul National University College of Medicine; Department of Genomic Medicine (J.G.Y., J.M.), Seoul National University Hospital; Department of Laboratory Medicine (J.G.Y), Gangnam Severance Hospital and Yonsei University College of Medicine; and Department of Neurology (A.K.), Chungbuk National University Hospital and Chungbuk National University College of Medicine, Cheongju-si, Republic of Korea.