1. Department of Emergency Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei 231, Taiwan
2. Department of Emergency Medicine, School of Medicine, Tzu Chi University, Hualien 970, Taiwan
3. Department of Ophthalmology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei 231, Taiwan
4. Research Assistant Center, Show Chwan Memorial Hospital, Changhua 500, Taiwan
5. Department of Medical Research, Chang Bing Show Chwan Memorial Hospital, Changhua 505, Taiwan