Submitted on: 08 May 2010.
Revised on: 09 July 2010.
Accepted on: 06 September 2010.
___________________CURRENT MICROBIOLOGY---SPRINGER
Submitted on: 27 February 2012.
Revised on: 30 March 2012.
Accepted on: 14 April 2012.
___________________CURRENT MICROBIOLOGY---SPRINGER
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Submitted on: 18 September 2006.
Revised on: 11 October 2006.
Accepted on: 24 October 2006.
___________________CURRENT MICROBIOLOGY---SPRINGER
Submitted on: 10 September 2014.
Revised on: 25 December 2014.
Accepted on: 31 January 2015.
___________________CURRENT MICROBIOLOGY---SPRINGER
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