Vitamin A deficiency and low prevalence of anemia in Yaqui Indian children in northwest Mexico

Valencia ME, Astiazarán H, Esparza J, González L, Grijalva MI, Cervera A, Zazueta P. Vitamin A deficiency and low prevalence of anemia in Yaqui Indian children in northwest Mexico. J Nutr Sci Vitaminol (Tokyo). 1999; 45(6): 747-57.