[1] Signature Diagnost AG, Potsdam, Germany
[2] Internist Facharztpraxis, Neuruppin, Germany
[3] Gemeinschaftspraxis Dres Reiner Musikowski, TobiasFloter & Steffen Schwanitz, Cottbus, Germany
[4] Praxis Innere Med Gastroenterol, Brandenburg, Germany
[5] Gastroenterolog Schwerpunktpraxis, Cottbus, Germany
[6] DRK Kliniken Kopenick, Berlin, Germany
[7] Kathol Krankenhaus St Johann Nepomuk, Erfurt, Germany
[8] Klinikum Dorothea Christiane Erxleben Quedlinburg, Quedlinburg, Germany
[9] Klinikum Ernst von Bergmann gGmbH, Potsdam, Germany
[10] SRH Wald Klinikum, Gera, Germany
[11] Staedt Klinikum Brandenburg, Brandenburg, Germany
[12] DRK Kliniken Berlin Westend, Berlin, Germany
[13] Klinikum Magdeburg, Magdeburg, Germany
[14] Ruppiner Kliniken GmbH, Neuruppin, Germany