http://reply.papertrans.cn/2/168/16780/16780-11.png
Submitted on: 18 October 2017.
Revised on: 11 December 2017.
Accepted on: 24 January 2018.
___________________Journal of Family and Community Medicine
http://reply.papertrans.cn/2/168/16780/16780-13.png
Submitted on: 25 January 2006.
Revised on: 26 April 2006.
Accepted on: 14 May 2006.
___________________Journal of Family and Community Medicine
http://reply.papertrans.cn/2/168/16780/16780-15.png
Submitted on: 18 August 2000.
Revised on: 13 September 2000.
Accepted on: 21 October 2000.
___________________Journal of Family and Community Medicine
Submitted on: 28 July 2005.
Revised on: 03 November 2005.
Accepted on: 25 December 2005.
___________________Journal of Family and Community Medicine
Submitted on: 12 November 2020.
Revised on: 01 March 2021.
Accepted on: 21 March 2021.
___________________Journal of Family and Community Medicine
Submitted on: 28 August 2006.
Revised on: 24 September 2006.
Accepted on: 18 October 2006.
___________________Journal of Family and Community Medicine
http://reply.papertrans.cn/2/168/16780/16780-20.png