Ding-An Chiang, Wei Chen*, Yi-Fan Wang+ and Lain-Jinn Hwang
Department of Information Engineering
Tamkang University
E-mail: chiang@cs.tku.edu.tw
*National Taipei College of Nursing
Taipei, Taiwan 112, R.O.C.
E-mail: wei@ntcn.edu.tw
+Chang Gung Institute of Nursing
Taoyuan, Taiwan 333, R.O.C.