7Bratzler DW,Raskob GE,Murray CK.Underuse of venous thromboembolism prophylaxis for general surgery patients:physician practices in the community hospital setting[J].Arch Intern Med,1998,158 :1909-1912.
8Fehrman EI;Thor J.An example of successful systematic impro-vement work process management improved routines and simplified dialysis stants,2000.
