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Lower prediagnostic serum 25-hydroxyvitamin D concentration is associated with higher risk of insulin-requiring diabetes: a nested case–control study

Metabolic SyndromeNutritionHigher RiskDiabetes EpidemiologyDiabetes ManagementHealth PolicyDiabetesNested Case–control StudyInsulin-requiring DiabetesDiabetes MellitusPublic Health