[1] Imperial Cancer Research Fund, London
[2] Policlinic for Children, University of Munich, Munich
[3] Imperial Cancer Research Fund, London
[4] Sloan-Kettering Institute for Cancer Research, New York, NY
[5] Cetus Corporation, Emeryville, CA
[6] University of Geneva, Geneva
[7] Imperial Cancer Research Fund, London
[8] Rheinisch-Westfälische Technische Hochschule, Aachen
[9] Standford University School of Medicine, Stanford, CA
[10] Kyushu University, Fukuoka
[11] University Hospital, Leiden
[12] Harvard University, Cambridge, MA
[13] State University Hospital, Copenhagen
[14] University of California, Los Angeles, CA