1. Department of International Trade, Tamkang University, New Taipei, Taiwan, ROC
2. Aino Health Science Center, Aino University, Tokyo, Japan
3. Institute of International Health, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
4. The Central Region Laboratory, Center for Research and Diagnostics, Centers for Disease Control, Taichung, Taiwan, ROC
5. Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan, ROC