[1] Rhein Westfal TH Aachen, Med Fac, Dept Intens Care Med, Aachen, Germany
[2] Univ Leipzig, Med Ctr, Dept Anaesthesiol & Intens Care, Leipzig, Germany
[3] Charite Univ Med Berlin, Dept Infect Dis & Resp Med, Berlin, Germany
[4] Free Univ Berlin, Berlin, Germany
[5] Humboldt Univ, Berlin, Germany
[6] Univ Cologne, Cochrane Haematol, Dept Internal Med 1, Ctr Integrated Oncol Aachen Bonn Cologne Duesselm, Cologne, Germany
[7] Univ Cologne, Univ Hosp Cologne, Cologne, Germany
[8] Heinrich Heine Univ Dusseldorf, Med Fac, Inst Gen Practice, Cochrane Metab & Endocrine Disorders Grp, Dusseldorf, Germany