1. Departments of Nursing, Hungkuang University, Taichung 433-2, Taiwan, ROC
2. Food Science and Nutrition, Hungkuang University, Taichung 433-2, Taiwan, ROC
3. Department of Food Science, National Chung-Hsing University, Taichung 402-27, Taiwan, ROC
4. Department of Applied Chemistry, National Chiayi University, Chiayi 60083, Taiwan, ROC