https://pmc.ncbi.nlm.nih.gov/articles/PMC3927550/
Kassim IA, Ruth LJ, Creeke PI, Gnat D, Abdalla F, Seal AJ - "Excessive iodine intake during pregnancy in Somali refugees" Matern Child Nutr 8(1):49-56 (2012) doi: 10.1111/j.1740-8709.2010.00259.x."The median UICs for nonpregnant women and children were 329 and 416 μg/L, respectively, indicating excessive iodine intake (>300 μg/L). The prevalence of visible goiter was <4%. The coverage of salt iodization was low, with a national average of 7.7% (95% CI: 3.2%, 17.4%). Spatial analysis revealed localized areas of relatively high and low iodine status. Variations could not be explained by food consumption or salt iodization but were associated with the main source of household drinking water, with consumers of borehole water having a higher UIC (569 vs. 385 μg/L; P < 0.001). Iodine intake in Somalia is among the highest in the world and excessive according to WHO criteria."
https://pmc.ncbi.nlm.nih.gov/articles/PMC6860604/
"The combined median UIC was 730 µg L(-1) (interquartile range, 780) (5.77 µmol L(-1)) and exceeded the upper safe limit of 500 µg L(-1) (3.95 µmol L(-1)) for pregnant women (P < 0.001), indicating excessive iodine intake. About 20% of the study subjects had 'more than adequate' urinary iodine, while over 71% had excessive UIC."