Strontium-90 and fluoride.
Smith
G E
GE
D001315:Australia; D005457:Fluoridation; D005459:Fluorides / Q000032:analysis*; D006801:Humans; D013326:Strontium Radioisotopes / Q000032:analysis*; D014070:Tooth / Q000032:analysis*; D006113:United Kingdom
D013326:Strontium Radioisotopes; D005459:Fluorides