http://reply.papertrans.cn/1/54/5376/5376-21.png
Submitted on: 11 October 1998.
Revised on: 22 December 1998.
Accepted on: 18 February 1999.
___________________Chronic Respiratory Disease---SAGE PUBLICATIONS LTD
http://reply.papertrans.cn/1/54/5376/5376-23.png
Submitted on: 20 February 2002.
Revised on: 12 April 2002.
Accepted on: 04 June 2002.
___________________Chronic Respiratory Disease---SAGE PUBLICATIONS LTD
http://reply.papertrans.cn/1/54/5376/5376-25.png
http://reply.papertrans.cn/1/54/5376/5376-26.png
Submitted on: 21 March 2000.
Revised on: 30 May 2000.
Accepted on: 15 July 2000.
___________________Chronic Respiratory Disease---SAGE PUBLICATIONS LTD
Submitted on: 01 October 2008.
Revised on: 21 December 2008.
Accepted on: 10 January 2009.
___________________Chronic Respiratory Disease---SAGE PUBLICATIONS LTD
Submitted on: 19 August 2003.
Revised on: 28 November 2003.
Accepted on: 15 December 2003.
___________________Chronic Respiratory Disease---SAGE PUBLICATIONS LTD
http://reply.papertrans.cn/1/54/5376/5376-30.png