1. Centre of Research in Epidemiology and Statistics, Inserm U1153, Epidemiology of Ageing and Neurodegenerative Diseases, Université de Paris, Paris, France
2. Accelting, Almere, the Netherlands
3. Department of Epidemiology and Public Health, University College London, United Kingdom
4. Department of Radiobiology and Regenerative Medicine, Institute for Radiological Protection and Nuclear Safety, Fontenay-Aux-Roses, France