1. Department of Ophthalmology, Konyang University, Kim's Eye Hospital, Myung‐Gok Eye Research Institute, Seoul, Korea,
2. Department of Ophthalmology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea,
3. Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea,
4. Department of Ophthalmology, Yeoncheon‐Gun Health Center and Country Hospital, Yeoncheon, Korea,