Rigshospitalet - Copenhagen University Hospital, Copenhagen, Denmark
U.Z. Gasthuisberg, Leuven, Belgium
Beatson West of Scotland Cancer Centre, Glasgow, Scotland, United Kingdom
Institut Jules Bordet, Brussels, Belgium
Royal Marsden - Surrey, Sutton, England, United Kingdom
Institut Bergonie, Bordeaux, France
CHRU de Limoges, Limoges, France
Centre Leon Berard, Lyon, France
German Hodgkin's Lymphoma Study Group, Cologne, Germany
CHU de Grenoble - Hopital de la Tronche, Grenoble, France
Ospedale San Martino, Genoa, Italy
Hopital Ambroise Pare, Boulogne, France
Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, Netherlands
Universitair Medisch Centrum St. Radboud - Nijmegen, Nijmegen, Netherlands