[1] ONZE LIEVE VROUW HOSP,AMSTERDAM,NETHERLANDS
[2] THORAX CTR ROTTERDAM,ROTTERDAM,NETHERLANDS
[3] INST CARDIOVASC PARIS SUD,ANTONY,FRANCE
[4] CTR CUORE COLUMBUS,MILAN,ITALY
[5] HOSP UNIV SAN CARLOS,MADRID,SPAIN
[6] HOP BROUSSAIS,F-75674 PARIS,FRANCE
[7] CLIN PASTEUR,TOULOUSE,FRANCE
[8] UNIV HOSP,ESSEN,GERMANY
[9] VANCOUVER HOSP,VANCOUVER,BC,CANADA
[10] INST CARDIOL MONTREAL,MONTREAL,PQ,CANADA
[11] WASHINGTON CARDIOL CTR,WASHINGTON,DC