Bibliographical noteFunding Information:
The work reported in this paper was undertaken during the tenure of a postdoctoral fellowship awarded by the International Agency for Research on Cancer. This work was partly funded by the Centers for Disease Control and Prevention (5R03 0H010056-02) and the Ministry of Health, Labour and Welfare of Japan (GA No 2012-02-21-01). The construction of the French cohort was partially supported by IRSN, AREVA and EDF. For the US contribution, funding was provided by the National Institute for Occupational Safety and Health, by the U.S. Department of Energy through an agreement with the U.S. Department of Health and Human Services and through a grant received by the University of North Carolina from the National Institute for Occupational Safety and Health (R03 OH-010056).