[1] Klinikum Klagenfurt, Dept Pulmonol, A-9020 Klagenfurt, Austria
[2] Med Univ Innsbruck, Div Hyg & Med Microbiol, A-6020 Innsbruck, Austria
[3] Univ Maryland, Dept Surg, Baltimore, MD 21201 USA
[4] Med Univ Innsbruck, Dept Cardiac Surg, A-6020 Innsbruck, Austria
[5] AKH Linz, Dept Pulmonol, Linz, Austria