1. Department of Ophthalmology, Institute of Ophthalmology and Optometry, Ewha Womans University Mok-Dong Hospital, Ewha Womans University School of Medicine, Seoul, Korea.
2. Department of Ophthalmology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea.
3. Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
4. Department of Nuclear Medicine, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.
5. Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.