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The development of hospital information has been carried out for nearly 50 years,and originally started as the hospital information system (HIS).1 So far HIS is the most widely and deeply used management system for hospitals in China.2 "General function standard for hospital information system" issued by China's Ministry of Health in 2002 defined that "The hospital information system refers to using of computer hardware and software technology,network communications technology,and other modem technology to comprehensively manage personnel,logistics,and finance in various departments in hospital.Gather,store,treat,extract,transport,aggregate,and process data in various stages of the medical activities,so that provide comprehensive and automatic information management and service to the hospital." As a result,comprehensive management based on personnel,logistics,finance,and hospital overall operation management are always the focus of hospital information construction.3,4