TY JOUR TI Registry for Chronic Radiation Sickness in a Cohort of Mayak PA Workers Exposed to Ionizing Radiation KW chronic gamma-ray exposure KW chronic radiation sickness KW red bone marrow KW occupational radiation exposure KW Mayak PA JO Medical Radiology and radiation safety AU Azizova, T.V. AU Bannikova, M.V. AU Grigor'eva, E.S. AU Zhuntova, G.V. AU Moseeva, M.B. AU Bragin, E.V. PY 2020 IS 65 PB Federal Medical Biological Agency of Russia