[1] Charite Univ Med Berlin, Dept Anesthesiol & Operat Intens Care Med CCM CVK, Berlin, Germany
[2] Free Univ Berlin, Berlin, Germany
[3] Humboldt Univ, Berlin, Germany
[4] Berlin Inst Hlth BIH, Berlin, Germany
[5] Lahn Dill Kliniken, Dept Trauma & Orthopaed Surg, Dillenburg, Germany
[6] Univ Giessen & Marburg, Dept Orthoped & Trauma Surg, Marburg, Germany
[7] Univ Siegen, Sch Sci & Technol, Siegen, Germany