1. Department of Neurology, Faculty of Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia
2. Department of Neurology, Dr. Sardjito Hospital, Yogyakarta, Indonesia
3. Department of Clinical Pathology, Faculty of Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia
4. Department of Clinical Pathology, Dr. Sardjito Hospital, Yogyakarta, Indonesia