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Prevalence of folate and vitamin B12 deficiency in Mexican children aged 1 to 6 years in a population-based survey Lucía Cuevas-Nasu ; Verónica Mundo-Rosas ; Teresa Shamah-Levy ; Ignacio Méndez-Gómez Humaran ![]() Salud Pública de México 2012, 54 (2) |