1. Graduate School of Medical Science, Brain Korea 21 Project, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Republic of Korea.
2. Department of Internal Medicine, Institute of Endocrine Research, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Republic of Korea.
3. Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Republic of Korea.