Author/Authors :
CHANG, Wen-Jen Dept. of Information Management - Chang Gung University, Taoyuan, Taiwan , CHANG, Yen-Hsiang Dept. of General Dentistry - Chang Gung Memorial Hospital, Taoyuan, Taiwan , HSIAO, Hsu-Chuan Dept. of General Dentistry - Chang Gung Memorial Hospital, Taoyuan, Taiwan