2Kennedy VC, Spears WD, Loe Jr HD, et al. Public health workforce infomation a state-level study[J]. J Public Health Manage Pract, 1999,5(3) : 10-19.
3Thomas CD. Developing human resources[J]. Healthcare Executive,1996,11( 6) :5.
4Cockcroft A, Williams S. Staff in the NHS[J]. BMd (Int edition),1998,316(7128):381.
5Philip TP, Roger WS. Economics and operations management : towards a theory of endogenous production speed[J]. Manage Decision Econ, 2002,23 (6) : 331-342.