1. Department of Clinical Pharmacy, School of Pharmacy, Taipei Medical University, Taipei 110, Taiwan
2. Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan
3. Institute of Pharmacognosy, School of Pharmacy, Taipei Medical University, Taipei 110, Taiwan
4. Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
5. Department of Pharmaceutical Sciences, Massachusetts College of Pharmacy and Health Sciences, Boston, Massachusetts 02115
6. Department of Ophthalmology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, 111 Taiwan