http://reply.papertrans.cn/1/15/1418/1418-11.png
Submitted on: 28 August 2013.
Revised on: 29 September 2013.
Accepted on: 25 October 2013.
___________________AMERICAN JOURNAL OF PREVENTIVE MEDICINE
http://reply.papertrans.cn/1/15/1418/1418-13.png
http://reply.papertrans.cn/1/15/1418/1418-14.png
Submitted on: 23 July 2000.
Revised on: 13 September 2000.
Accepted on: 14 October 2000.
___________________AMERICAN JOURNAL OF PREVENTIVE MEDICINE
Submitted on: 04 January 2019.
Revised on: 05 April 2019.
Accepted on: 30 May 2019.
___________________AMERICAN JOURNAL OF PREVENTIVE MEDICINE
http://reply.papertrans.cn/1/15/1418/1418-17.png
http://reply.papertrans.cn/1/15/1418/1418-18.png
http://reply.papertrans.cn/1/15/1418/1418-19.png
http://reply.papertrans.cn/1/15/1418/1418-20.png