The original version of this Article contained an error in the title of the paper, where “Genetic Epidemiology of Glucose-6-Phosphate Dehydrogenase Deficiency in the Arab World” was incorrectly given as “Genetic Epidemiology of Glucose-6-Dehydrogenase Deficiency in the Arab World”. The gene discussed is G6PD; the disease is hyperinsulinemic hypoglycemia, familial, 4.