1. Environmental Health Science Research Bureau, Health Canada, Ottawa, Canada
2. Biology and Environmental Chemistry Division, Sustainable System Research Laboratory, Central Research Institute of Electric Power Industry (CRIEPI), Tokyo, Japan
3. on secondment from IRSN to the Committee on Radiological Protection and Public Health's secretariat, Paris, France
4. Health and Environment Division, Institute for Radiological Protection and Nuclear Safety (IRSN), Fontenay-aux-Roses, France
5. Environment Directorate, Canadian Nuclear Laboratories, Chalk River, Canada
6. Norwegian Institute for Water Research (NIVA), Oslo, Norway
7. Faculty of Environmental Science and Technology, Norwegian University of Life Sciences (NMBU), Ås, Norway
8. Centre for Environmental Radioactivity, Norwegian University of Life Sciences (NMBU), Ås, Norway