7Schoon Hoven I, Haalboom JR, Bouusema MT, et al. Prospective cohort study of routine use of risk assessment scales for predic- tion of pressure ulcers [ J ]. BMJ,2002,325 ( 7368 ) : 797 - 802.
8Amstrong D, Bortze P. An intergrative review of pressure relief in surgical patients [ J ]. Aorn J, 2001,73 ( 3 ) ; 645 - 674.