[1] Univ Munich, Munich, Germany
[2] DRK Kliniken Kopenick, Berlin, Germany
[3] Stadt Klinikum Karlsruhe, Karlsruhe, Germany
[4] Praxis Dr Heinrich, Fuerstenwalde, Germany
[5] Univ Ulm, Ulm, Germany
[6] Univ Heidelberg, Heidelberg, Germany
[7] GGG, Mannheim, Germany
[8] Charite Campus Virchow Klinikum, Berlin, Germany
[9] Univ Klinikum Erlangen, Erlangen, Germany
[10] Univ Dusseldorf, Dusseldorf, Germany