%0 Journal Article %T Extended spectrum beta-lactamase production in Shigella isolates - A matter of concern %A Varghese S %A Aggarwal A %J Indian Journal of Medical Microbiology %D 2011 %I Medknow Publications %U http://www.ijmm.org/article.asp?issn=0255-0857;year=2011;volume=29;issue=1;spage=76;epage=78;aulast=Varghese