Among the 4557 anemic children, 3635 children had valid hemoglobin, serum ferritin, CRP, erythrocyte folate, and vitamin B12 values, of which 2639 (72.6%, 95% CI: 68·7–76·1) had anemia with micronutrient deficiencies (at least one of iron, vitamin B12, folate) (Table 1). The gene discussed is CRP; the disease is hyperinsulinemic hypoglycemia, familial, 4.