“…Cohort identification relies upon previously conducted studies [36] and the availability of central dosimetry repositories [6] , [40] , [45] , [46] , [47] , [48] , [49] , [50] . Vital status determination and cause of death are obtained following a multistage approach with multiple sources of information that include state maintained vital statistics files and national databases of the Social Security Administration Death Master File (SSA-DMF), the National Death Index (NDI) and the SSA Service for Epidemiological Researchers (SSA-SER), along with publicly available data, ancestry services, and death certificates [51] .…”