E, V. M., Julián, E., G, L. J., O, M. R., G, M. G., & Luis, Q. (2010). Could giardiasis be a risk factor for low zinc status in schoolchildren from northwestern Mexico? A cross-sectional study with longitudinal follow-up. BMC Public Health, 10(1), 85. https://doi.org/10.1186/1471-2458-10-85

E, Valencia Mauro, Esparza Julián, Leyva Johanna G, Méndez Rosa O, Morales Gloria G, and Quihui Luis. "Could Giardiasis Be a Risk Factor for Low Zinc Status in Schoolchildren from Northwestern Mexico? A Cross-sectional Study with Longitudinal Follow-up." BMC Public Health 10, no. 1 (2010): 85. https://doi.org/10.1186/1471-2458-10-85.

E, Valencia Mauro, et al. "Could Giardiasis Be a Risk Factor for Low Zinc Status in Schoolchildren from Northwestern Mexico? A Cross-sectional Study with Longitudinal Follow-up." BMC Public Health, vol. 10, no. 1, 2010, p. 85, https://doi.org/10.1186/1471-2458-10-85.