http://reply.papertrans.cn/2/112/11120/11120-31.png
http://reply.papertrans.cn/2/112/11120/11120-32.png
Submitted on: 06 March 2014.
Revised on: 07 June 2014.
Accepted on: 04 August 2014.
___________________Health Policy and Technology---ELSEVIER SCI LTD
http://reply.papertrans.cn/2/112/11120/11120-34.png
http://reply.papertrans.cn/2/112/11120/11120-35.png
Submitted on: 03 October 2007.
Revised on: 13 December 2007.
Accepted on: 24 January 2008.
___________________Health Policy and Technology---ELSEVIER SCI LTD