Submitted on: 27 February 2003.
Revised on: 11 June 2003.
Accepted on: 28 June 2003.
___________________International Journal of Noncommunicable Diseases
http://reply.papertrans.cn/2/139/13845/13845-12.png
Submitted on: 05 June 2008.
Revised on: 03 September 2008.
Accepted on: 03 October 2008.
___________________International Journal of Noncommunicable Diseases
http://reply.papertrans.cn/2/139/13845/13845-14.png
Submitted on: 19 June 2023.
Revised on: 17 September 2023.
Accepted on: 10 November 2023.
___________________International Journal of Noncommunicable Diseases
Submitted on: 31 May 2018.
Revised on: 26 August 2018.
Accepted on: 23 September 2018.
___________________International Journal of Noncommunicable Diseases
http://reply.papertrans.cn/2/139/13845/13845-17.png
http://reply.papertrans.cn/2/139/13845/13845-18.png
http://reply.papertrans.cn/2/139/13845/13845-19.png
Submitted on: 10 December 1998.
Revised on: 21 March 1999.
Accepted on: 06 April 1999.
___________________International Journal of Noncommunicable Diseases