1. Department of Ophthalmology, National Taiwan University Hospital, No. 7, Chung-Shan South Road, Taipei 10002, Taiwan
2. Department of Ophthalmology, Far Eastern Memorial Hospital, No. 21, Sec. 2, Nanya South Road, Banqiao District, New Taipei City 22056, Taiwan
3. Department of Ophthalmology, National Taiwan University Hospital, Yun-Lin Branch, No. 579, Sec. 2, Yunlin Road, Douliou City, Yunlin County 64041, Taiwan