Centre Hospitalier Universitaire de Toulouse, Toulouse, France
Thoraxklinik University of Heidelberg, Heidelberg, Germany
Otto-Wagner Hospital, Vienna, Austria
Azienda Ospedaliero - Universitaria, Ancona, Italy
Krankenhaus Nord - Klinik Floridsdorf, Vienna, Austria
Sozialstiftung Bamberg, Klinikum am Bruderwald, Bamberg, Germany
DRK Kliniken Berlin / Mitte, Berlin, Germany
The Royal Melbourne Hospital, Melbourne, Victoria, Australia