Antimicrobial susceptibility of Escherichia coli from swine, horses, dogs and cats as determined in the BfT-GermVet monitoring program 2004–2006 - Grobbel, M; Lübke-Becker, A; Alesik, E; Schwarz, S; Wallmann, J; Werckenthin, C; Wieler, LH (Berl Münch Tierärztl Wschr, 2007)