Distribution and terminology for nutrient reference values. IOM (1); EFSA (9); WHO/FAO (11); NASEM (16). AR, average requirement; EAR, estimated average requirement; EFSA, European Food Safety Authority; H-AR, harmonized average requirement; H-UL, harmonized upper level; IOM, Institute of Medicine; NASEM, National Academies of Sciences, Engineering, and Medicine; PRI, population reference intake; RI, recommended intake; RNI, recommended nutrient intake; UL, tolerable upper intake level.