Professor Peter Licht, Odense, Denmark
Polyclinique Rillieux, Rillieux-La-Pape, France
Andree D'Hoore, Leuven, Belgium
CHU Sart-Tilman, Liege, Belgium
University of Pisa, Pisa, Italy
Clinique des Cèdres, Cornebarrieu, France
Chirurgie Proctologique, Besancon, France
Hopital Bagatelle, Talence, France