Submitted on: 29 April 1999.
Revised on: 02 June 1999.
Accepted on: 25 July 1999.
___________________EPIDEMIOLOGY AND INFECTION---CAMBRIDGE UNIV PRESS
Submitted on: 14 February 2005.
Revised on: 25 April 2005.
Accepted on: 16 May 2005.
___________________EPIDEMIOLOGY AND INFECTION---CAMBRIDGE UNIV PRESS
Submitted on: 13 May 2019.
Revised on: 10 August 2019.
Accepted on: 25 August 2019.
___________________EPIDEMIOLOGY AND INFECTION---CAMBRIDGE UNIV PRESS
Submitted on: 18 December 2014.
Revised on: 13 March 2015.
Accepted on: 02 April 2015.
___________________EPIDEMIOLOGY AND INFECTION---CAMBRIDGE UNIV PRESS
Submitted on: 06 October 2012.
Revised on: 11 December 2012.
Accepted on: 08 February 2013.
___________________EPIDEMIOLOGY AND INFECTION---CAMBRIDGE UNIV PRESS
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http://reply.papertrans.cn/1/88/8739/8739-27.png
Submitted on: 16 July 2006.
Revised on: 08 August 2006.
Accepted on: 21 September 2006.
___________________EPIDEMIOLOGY AND INFECTION---CAMBRIDGE UNIV PRESS
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Submitted on: 12 February 2010.
Revised on: 06 March 2010.
Accepted on: 21 April 2010.
___________________EPIDEMIOLOGY AND INFECTION---CAMBRIDGE UNIV PRESS