[1] Rhein Westfal TH Aachen, Univ Hosp Aachen, Cent Inst Infect Control & Infect Dis, D-52074 Aachen, Germany
[2] Univ Med Gottingen, Cent Inst Infect Control & Infect Dis, Gottingen, Germany
[3] Rhein Westfal TH Aachen, Univ Hosp Aachen, Dept Med 1, D-52074 Aachen, Germany