Submitted on: 13 November 1999.
Revised on: 22 December 1999.
Accepted on: 19 February 2000.
___________________JAC-Antimicrobial Resistance---OXFORD UNIV PRESS
http://reply.papertrans.cn/2/148/14775/14775-32.png
http://reply.papertrans.cn/2/148/14775/14775-33.png
http://reply.papertrans.cn/2/148/14775/14775-34.png
Submitted on: 11 April 2014.
Revised on: 17 June 2014.
Accepted on: 13 August 2014.
___________________JAC-Antimicrobial Resistance---OXFORD UNIV PRESS
http://reply.papertrans.cn/2/148/14775/14775-36.png