2Ashishi K .J. et al. Use of electronic health records in U.S. hos- pitals. N Engl J Med 2009,360:1628 - 38.
3Catherine M. et al. Electronic health records in Ambulatory Care~A national survey of physicians. N Engl J Med2008,359: 50 - 60.
4Jha AK, DesRoches CM, Kralovec PD, Joshi MS al. A progress report on electronic health records in U.S. hospitals. Health Aft ( Millwood). 2010 Oct;29(10) : 1951 - 7.