University Hospital Duesseldorf, Duesseldorf, North-Rhine-Westphalia, Germany
APHP Henri Mondor, Paris, France
German Heart Center, Berlin, Germany
Ascension St. Vincent, Carmel, Indiana, United States
Tufts Medical Center, Boston, Massachusetts, United States
The University of Chicago, Chicago, Illinois, United States
Klinik Hirslanden, Zürich, Switzerland
Zurich University Hospital, Zürich, Switzerland
Ospedale San Filippo Neri, Roma, Lazio, Italy
Universitätsklinikum Düsseldorf, Düsseldorf, Nordrhein-Westfalen, Germany
San Filippo Neri Hospital, Rome, Italy
Faculty Hospital Hradec Kralove, Hradec Králové, Czechia
Klinic Hirslanden, Zürich, Witellikerstrasse 40, Switzerland
Clinical Center of Serbia, Clinic for Vascular Surgery, Belgrade, Serbia
Zurich University Hospital- Klinik für Herz- und Gefässchirurgie, Zurich, Switzerland
Azienda Ospedaliera Arcispedale S. Maria Nuova, Reggio Emilia, Italy