Affiliation: | a Department of Information Management, Chang Gung Institute of Nursing, Kwei-Shan, Tao-Yuan, Taiwanf1E-mail: kplin@cc.cgin.edu.twf1b Department of MSCS (M/C 249), University of Illinois at Chicago, 851 South Morgan Street, Chicago, Illinois, 60607-7045, f2E-mail: yau@uic.eduf2 |