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These data from the WHO Diamond study of
insulin-dependent diabetes mellitus among children. There are also some examples: Nationality Incidence per 100 000 children Source Migrant British Islands 14-20 (Several places) 13(Canada) Indian 7-33 (Several areas) 9 (Canada) Puerto Rico 10 (Puerto Rico) 14 (Philadelphia) It seem migration has a big effect. But we need just a few studies to suggest it. |