http://reply.papertrans.cn/3/298/29728/29728-31.png
Submitted on: 16 October 1999.
Revised on: 17 November 1999.
Accepted on: 28 November 1999.
Transboundary and Emerging Diseases
Submitted on: 08 August 1999.
Revised on: 30 August 1999.
Accepted on: 12 September 1999.
Transboundary and Emerging Diseases
http://reply.papertrans.cn/3/298/29728/29728-34.png
Submitted on: 10 November 2004.
Revised on: 21 November 2004.
Accepted on: 12 December 2004.
Transboundary and Emerging Diseases
http://reply.papertrans.cn/3/298/29728/29728-36.png