Site name	# of patients
Vienna—Medical University (AKH)	19
H. Baumgartner, D. Glogar, M.T. Kasimir, P. Simon, W. Wisser, E. Wolner
Paris—Hôpital Bichat	18
N. Al-Attar, D. Himbert, P. Nataf, A. Vahanian
London—Kings College Hospital	17
A. El-Gamel, P. MacCarthy, M. Thomas, O. Wendler
Essen—West-German Heart Center, Essen, University Hospital	16
H. Eggebrecht, R. Erbel, H. Jakob, P. Kahlert, S. Sack, M. Thielmann, D. Wendt
Massy—Institut Hospitalier Jacques Cartier	15
P. Donzeau-Gouge, A. Farge, T. Lefevre, M.-C. Morice, M. Romano
Aalst, Onze Lieve Vrouwziekenhuis (OLVZ)	13
F. Casselman, B. De Bruyne, I. Degrieck, Marc Vanderheyden, H. Vanermen
Rouen—Charles Nicole Hôpital	12
J.-P. Bessou, A. Cribier, H. Eltchaninoff, Y.-P. Litzler
Frankfurt—J.W. Goethe University	12
M. Doss, S. Fichtlscherer, V. Schächinger, G. Wimmer-Greinecker
Rotterdam—Erasmus Medical Center	8
P. DeJaegere, A.P. Kappetein, P. Serruys