7[1]Chu S, Cesnik B. A three-tier clinical information systems design model. International Journal of Medical Informatics, 2000, 57: 91-107
8[2]Berg M. Implementing information systems in health care organizations:myths and challenges. International Journal of Medical Informatics,2001, 64: 143- 156
9[4]Haux R. Aims and tasks of medical informatics. Internaltional Journal of Medical Informatics, 1997, 44:9 - 20