http://reply.papertrans.cn/2/172/17134/17134-21.png
http://reply.papertrans.cn/2/172/17134/17134-22.png
http://reply.papertrans.cn/2/172/17134/17134-23.png
http://reply.papertrans.cn/2/172/17134/17134-24.png
http://reply.papertrans.cn/2/172/17134/17134-25.png
http://reply.papertrans.cn/2/172/17134/17134-26.png
http://reply.papertrans.cn/2/172/17134/17134-27.png
Submitted on: 26 March 2006.
Revised on: 04 June 2006.
Accepted on: 27 July 2006.
___________________JOURNAL OF HEALTH CARE FOR THE POOR AND UNDERSERVED
http://reply.papertrans.cn/2/172/17134/17134-29.png
http://reply.papertrans.cn/2/172/17134/17134-30.png