4Mittmann N, Seung S J, Pisterzi LF,et al. Nursing workload associated with hospital patient care[J]. Disease Management & Health Outcomes,2008,16(1) :53 - 61.
5Vahakangas P, Noro A, Finne- Soveri H. Daily rehabilitation nursing increases the nursing time spent on residents[J]. International Journal of Nursing Practice, 2008,14(2) : 157 - 164.