1. Dong Seoul Geriatric Hospital, Institute for Geriatric Medicine, Changwon, Kyungsangnam-do, Republic of Korea;
2. SU Yonsei eye clinic, Seoul, Republic of Korea;
3. Department of Family Medicine, Institute for Translational & Clinical Research, International St. Mary’s Hospital, Catholic Kwandong University College of Medicine, Incheon, Republic of Korea;
4. Institute for Translational & Clinical Research, International St. Mary’s Hospital, Catholic Kwandong University College of Medicine, Incheon, Republic of Korea