[1] Karolinska Univ Hosp, Karolinska Inst MTC, Stockholm, Sweden
[2] Natl Med Inst, Div Clin Microbiol & Infect Prevent, Warsaw, Poland
[3] Cardiff Univ, Cardiff, S Glam, Wales
[4] Hlth Protect Agcy, Antibiot Resistance Monitoring & Reference Lab, London, England
[5] Univ E Anglia, Norwich Med Sch, Norwich NR4 7TJ, Norfolk, England
[6] Univ Queensland, Clin Res Ctr, Herston, Qld, Australia