1. Division of Endocrinology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
2. Department of Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Korea.
3. Department of Pathology, Yonsei University College of Medicine, Seoul, Korea.
4. Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Korea.