1 Department of Ophthalmology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, N-15, W-7, Kita-ku, Sapporo, Hokkaido, 060-8638, Japan.
2 Department of Ophthalmology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, N-15, W-7, Kita-ku, Sapporo, Hokkaido, 060-8638, Japan. [email protected].
3 Department of Ophthalmology, Health Sciences University of Hokkaido, Sapporo, Japan.