1. Department of Medical Applied Chemistry; Chung Shan Medical University; Taichung 402 Taiwan, Tel: +886 4 24730022 ext. 12135, Fax: +886 4 23248189
2. Department of Medical Education; Chung Shan Medical University Hospital; Taichung 402 Taiwan
3. Department of Applied Chemistry; National Chi Nan University; Natu Taiwan