1. Swedish Radiation Safety Authority, Radioanalytical Laboratory, Solna strandväg 96, 171 16 Stockholm, Sweden
2. University of Gdańsk, Faculty of Chemistry, Department of Environmental Chemistry and Radiochemistry, Laboratory of Toxicology and Radiation Protection, Wita Stwosza 63, Gdańsk, 80-308, Poland
3. Linköping University, Department of Health, Medicine and Caring Science, Division of Diagnostics and Specialist Medicine, 581 83 Linköping, Sweden