Evaluation of the E test for the assessment of synergy of antibiotic combinations against multiresistant Pseudomonas aeruginosa isolates from cystic fibrosis patients - Balke,B.; Hogardt,M.; Schmoldt,S.; Hoy,L.; Weissbrodt,H.; Haussler,S. (Eur J Clin Microbiol Infect Dis, 2006)