Submitted on: 19 February 2001.
Revised on: 12 April 2001.
Accepted on: 01 June 2001.
___________________JOURNAL OF CLINICAL VIROLOGY---ELSEVIER
Submitted on: 04 November 2002.
Revised on: 21 January 2003.
Accepted on: 06 March 2003.
___________________JOURNAL OF CLINICAL VIROLOGY---ELSEVIER
Submitted on: 19 October 2001.
Revised on: 21 November 2001.
Accepted on: 16 January 2002.
___________________JOURNAL OF CLINICAL VIROLOGY---ELSEVIER
http://reply.papertrans.cn/2/160/15940/15940-24.png
Submitted on: 03 February 2002.
Revised on: 27 March 2002.
Accepted on: 05 May 2002.
___________________JOURNAL OF CLINICAL VIROLOGY---ELSEVIER
http://reply.papertrans.cn/2/160/15940/15940-26.png
http://reply.papertrans.cn/2/160/15940/15940-27.png
http://reply.papertrans.cn/2/160/15940/15940-28.png
http://reply.papertrans.cn/2/160/15940/15940-29.png
http://reply.papertrans.cn/2/160/15940/15940-30.png