: The estimated 20 : “~Sr dose to bone : is maximal : because udditzans - of . calcium ; 7 90 co the diet could readily veduce Sry uptake, lt appears unlikely that, with moderate restrictions on living and eating aabits, the dose to the whole body or to bone will reach 2 rads in 5 years, LO rads in 30 years or 16 rads in 70 years. 3069098