1. Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, BS8 2PS, United Kingdom
2. Centre for Radiation, Chemical and Environmental Hazards (PHE-CRCE), Public Health England, Didcot, OX11 0RQ, United Kingdom
3. Centre for Occupational and Environmental Health, University of Manchester, Manchester, M13 9PL, United Kingdom
4. Sellafield Approved Dosimetry Service, Sellafield Ltd, Cumbria, CA20 1PG, United Kingdom