“…U.S. Federal Geographic Data Committee (FGDC) defines GIS as: "GIS is used for input, storage, maintenance, management, retrieval, analysis, synthesis and output of geographic information, or location-based information computer systems" . Now, GIS technology is widely applied in various fields, including military command, oil and gas, transportation, forest resources, earth monitoring, coal resources, and public health [3][4][5]. 1 Under the EHR data standards proposed by China Ministry of Health on 2009, the researchers of our project developed an electronic health record system.…”