Useful links
WHO Radiation Programme
UNSCEAR - Chernobyl
Belarus - Republican Research Center for Radiation Medicine and Human Ecology
Russia - National Radiation and Epidemiology Registry
Ukraine - Research Centre for Radiation Medicine
Chernobyl Info (Switzerland)
Nagasaki University Chernobyl Corporation
US National Cancer Institute Chornobyl Project
Institut de Radioprotection et de Sûreté Nucléaire