Submitted on: 17 August 2009.
Revised on: 26 September 2009.
Accepted on: 13 October 2009.
Pacific Rim International Journal of Nursing Research
http://reply.papertrans.cn/3/240/23924/23924-32.png
http://reply.papertrans.cn/3/240/23924/23924-33.png
http://reply.papertrans.cn/3/240/23924/23924-34.png
http://reply.papertrans.cn/3/240/23924/23924-35.png
http://reply.papertrans.cn/3/240/23924/23924-36.png