2Safdar N, Maki D G. Risk of catheter-related bloodstreaminfection with peripherally inserted central venous cathetersused in hospitalized patients[J].Chest, 2005,128 (2) : 489-495.
3Crossen-Sills J, Toomey I,Doherty M E. Technology andhome care: implementing systems to enhance aging in place[J]. Nurs Clin North Am,2009,44(2) :239-246.
4Wang LR,Wang Y,Lou Y,et al. The role of quality con- trol circles in sustained improvement of medical quality [J]. Springer Plus, 2013,2( 1 ) : 141-145.