Prevalence of HEp-2 cell-adherent escherichia coli and characterization of enteroaggregative e coliand chain like adherente coli isolated from children with and without diarrhoea in Londrina, Brazil - Gioppo, N M R; Elias-Jr, E P; Vidotto, Marilda Carlos; Linhares, R E; Saridakis, H O; Amaral, T A T G; Trabulsi, L R; Pelayo, J S (Fems Microbiology Letters, 2000)