[1] Klinikum Klagenfurt Worthersee, Dept Cardiothorac & Vasc Surg, Klagenfurt, Austria
[2] Klinikum Klagenfurt Worthersee, Dept Hosp Epidemiol & Infect Control, Klagenfurt, Austria
[3] Klinikum Klagenfurt Worthersee, Dept Internal Med, Klagenfurt, Austria
[4] Klinikum Klagenfurt Worthersee, Dept Hosp Pharm, Klagenfurt, Austria