[1] University Hospital Herlev, Dept. of Oncology
[2] Clinique de Genolier, CH-1245 Genolier
[3] Medical Oncology Division, Silvestrini Hospital, 06080 S. Sisto, Perugia
[4] University Hospital of Kuopio, FIN-70211 Kuopio
[5] ESMO Guidelines Task Force, ESMO Head Office, CH-6962 Viganello-Lugano