3Zhaolian Quyang,Hui Chi,Guozhong Yang. Electronic medical equipment:Statistics and analysis of patent data for technology assessment[J].IFMEB Proceedings,2009,(12):320-323.
4Lafrenaye R R,Pezzullo J C. Internally developed medical equipment management system:A viable alternative[J].Journal o0 Clinical Engineering,1991,(04):315-321.