TY JOUR TI Risk Assessment of Senile Cataract Incidence in a Cohort of Nuclear Workers of Mayak Production Association KW risk KW incidence KW senile cataracts KW external radiation KW staff of Mayak PA KW prolonged exposure JO Medical Radiology and radiation safety AU Azizova, T.V. AU Bragin, E.V. AU Hamada, N.. AU Bannikova, M.V. PY 2018 IS 63 PB Federal Medical Biological Agency of Russia