Submitted on: 19 March 2010.
Revised on: 29 May 2010.
Accepted on: 20 July 2010.
___________________INTERNATIONAL MICROBIOLOGY---SPRINGER
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Submitted on: 06 May 2002.
Revised on: 17 August 2002.
Accepted on: 08 October 2002.
___________________INTERNATIONAL MICROBIOLOGY---SPRINGER
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Submitted on: 11 December 2011.
Revised on: 21 March 2012.
Accepted on: 09 April 2012.
___________________INTERNATIONAL MICROBIOLOGY---SPRINGER