1. Department of Ophthalmology, Cheng Hsin General Hospital, Taipei, Taiwan.
2. Department of Ophthalmology, Zaozhuang Municipal Hospital, Zaozhuang, Shandong, China
3. Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
4. Department of Chinese Medicine, School of Chinese Medicine, China Medical University, Taichung, Taiwan.