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Posted by NiyazAhmed on 20 Jul 2009 at 10:55 GMT

Affiliation of author Niyaz Ahmed should read as follows:

Niyaz Ahmed 2, 7

2 Pathogen Biology Laboratory, Department of Biotechnology, University of Hyderabad, Hyderabad, India

7 Pathogen Evolution Group, CDFD, Hyderabad, India

No competing interests declared.