1. Department of Ophthalmology, Changhua Christian Hospital, Changhua, Taiwan
2. School of Medicine, National Taiwan University, Taipei, Taiwan
3. School of Medicine, Chung-Shan Medical University, Taichung, Taiwan
4. School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
5. Department of Optometry, Da-Yeh University, Changhua, Taiwan