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This map illustrates the classification of developing countries according to World Bank criteria, emphasizing their geographic latitude and the associated ability to synthesize vitamin D. Information is derived from the article by Tavera-Mendoza et al. (2010), which discusses the prevalence, risk factors, and outcomes of hypovitaminosis D in these regions. Understanding the geographic and socioeconomic factors influencing vitamin D levels is crucial for addressing public health concerns related to vitamin D deficiency in developing nations.
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Figure 1 World map indicating developing countries as classified by World Bank criteria in color and relating latitude by geographic regions to skin ability to synthesize vitamin D as estimated from information provided in an article by Tavera-Mendoza and White. Arabi, A. et al.(2010) Hypovitaminosis D in developing countries —prevalence, risk factors and outcomes Nat. Rev. Endocrinol. doi:10.1038/nrendo.2010.146