Chernobyl: Message for the 21st Century (Excerpta Medica: International Congress Series 1234), Elsevier, Amsterdam, 2002 Proceedings of the Sixth Chernobyl Sasakawa Medical Cooperation Symposium held in Moscow, Russia in 2001. It reports not only the 5 centers activities after the first five-year project, but also several international collaboration activities born from the Chernobyl Sasakawa project.