Submitted on: 16 August 2012.
Revised on: 21 October 2012.
Accepted on: 19 November 2012.
___________________Annual Review of Public Health
Submitted on: 26 June 2001.
Revised on: 15 September 2001.
Accepted on: 29 September 2001.
___________________Annual Review of Public Health
http://reply.papertrans.cn/1/20/1969/1969-13.png
Submitted on: 18 October 2001.
Revised on: 24 December 2001.
Accepted on: 01 February 2002.
___________________Annual Review of Public Health
http://reply.papertrans.cn/1/20/1969/1969-15.png
http://reply.papertrans.cn/1/20/1969/1969-16.png
http://reply.papertrans.cn/1/20/1969/1969-17.png
Submitted on: 25 August 2008.
Revised on: 14 October 2008.
Accepted on: 05 November 2008.
___________________Annual Review of Public Health
Submitted on: 31 May 2003.
Revised on: 04 September 2003.
Accepted on: 05 October 2003.
___________________Annual Review of Public Health
http://reply.papertrans.cn/1/20/1969/1969-20.png