- Correspondence to Young Kook Kim, Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, Republic of Korea;
- Received May 14, 2020
- Revised August 12, 2020
- Accepted September 15, 2020
- First published September 30, 2020.
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