[1] ODENSE HOSP, ODENSE, DENMARK
[2] HOSP GARCIA ORTA, ALMADA, PORTUGAL
[3] ACAD ZIEKENHUIS, AMSTERDAM, NETHERLANDS
[4] ROYAL VICTORIA HOSP, BELFAST BT12 6BA, ANTRIM, NORTH IRELAND
[5] HOSP MARE DEU ESPERANCA, BARCELONA, SPAIN
[6] HOP PELLEGRIN, BORDEAUX, FRANCE
[7] KLINIKUM STADT LUDWIGSHAFEN, HAUT KLIN, DORTMUND, GERMANY
[8] S KARELIA CENT HOSP, LAPPEENRANTA, FINLAND
[9] UNIV CATHOLIQUE LOUVAIN, B-1200 BRUSSELS, BELGIUM
[10] UNIV OULU, OULU, FINLAND
[11] GENTOFTE UNIV HOSP, HELLERUP, DENMARK
[12] KAROLINSKA SJUKHUSET, STOCKHOLM, SWEDEN
[13] AMERSHAM GEN HOSP, AMERSHAM, ENGLAND