Detection of virulence-associated genes in pathogenic and commensal avian Escherichia coli isolates - Paixão, Ana; Ferreira, A; Fontes, Miguel; Themudo, Patrícia; Albuquerque, Teresa; Chaveiro Soares, Manuel; Fevereiro, Miguel; Martins, Luís; Correa de Sá, Inácia (2016)