Service de Chirurgie CHU Hopital Antoine Béclère, Clamart, France
Service de Neurochirurgie CHU Saint-Etienne, Saint-etienne, France
Hospital St. Luc, Brussels, Belgium
Vienna Medical University, Vienne, Austria
Universistaetsklinik, Freiburg, Germany
Centre d'investigation clinique HOPITAL GEORGE POMPIDOU, Paris, France
Louis Mourier hospital (AP-HP), Colombes, France
Hopital Bicëtre, Le Kremlin Bicetre, France
CHU Henri Mondor, Creteil, France
Hopital BICHAT, Paris, France
Robert Debré University Hospital, Paris, France
Hôpital Saint Louis, Paris, France
CHU Henri Mondor, Creteil, France