Submitted on: 13 November 2021.
Revised on: 25 January 2022.
Accepted on: 04 February 2022.
___________________Clinical Epidemiology---DOVE MEDICAL PRESS LTD
Submitted on: 03 June 2006.
Revised on: 20 July 2006.
Accepted on: 01 September 2006.
___________________Clinical Epidemiology---DOVE MEDICAL PRESS LTD
http://reply.papertrans.cn/1/57/5618/5618-13.png
http://reply.papertrans.cn/1/57/5618/5618-14.png
http://reply.papertrans.cn/1/57/5618/5618-15.png
Submitted on: 12 March 2007.
Revised on: 03 June 2007.
Accepted on: 19 July 2007.
___________________Clinical Epidemiology---DOVE MEDICAL PRESS LTD
Submitted on: 17 March 2014.
Revised on: 21 June 2014.
Accepted on: 19 August 2014.
___________________Clinical Epidemiology---DOVE MEDICAL PRESS LTD
http://reply.papertrans.cn/1/57/5618/5618-18.png
http://reply.papertrans.cn/1/57/5618/5618-19.png
http://reply.papertrans.cn/1/57/5618/5618-20.png