Centre Henri Becquerel, Rouen, France
Institut Bergonie, Bordeaux, France
Algemeen Ziekenhuis Sint-Augustinus, Wilrijk, Belgium
CRLCC Nantes - Atlantique, Nantes-Saint Herblain, France
Institut Jules Bordet, Brussels, Belgium
Western General Hospital, Edinburgh, Scotland, United Kingdom
U.Z. Gasthuisberg, Leuven, Belgium
Regional Lung Diseases Hospital, Poznan, Poland
Radiotherapeutisch Instituut-(Riso), Deventer, Netherlands
Sophia Ziekehuis, Zwolle, Netherlands
Antoni van Leeuwenhoekhuis, Amsterdam, Netherlands
Ludwig Boltzmann - Institute for Applied Cancer Research, Vienna, Austria
University of Ioannina, Ioannina, Greece
Clinique De Genolier, Genolier, Switzerland
Karl-Franzens-University Graz, Graz, Austria
Universitaetsklinikum Essen, Essen, Germany
Vrije Universiteit Medisch Centrum, Amsterdam, Netherlands
Instituto de Radiomedicina, Santiago, Chile
Hospitais da Universidade de Coimbra (HUC), Coimbra, Portugal
Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
Aarhus University Hospital - Aarhus Sygehus - Norrebrogade, Aarhus, Denmark
Universitatsklinikum Carl Gustav Carl Carus, Dresden, Germany
Eberhard Karls Universitaet, Tuebingen, Germany
Norwegian Radium Hospital, Oslo, Norway
Klinikum der J.W. Goethe Universitaet, Frankfurt, Germany
U.Z. Gasthuisberg, Leuven, Belgium
University Hospital Rebro, Zagreb, Croatia
Daniel Den Hoed Cancer Center at Erasmus Medical Center, Rotterdam, Netherlands