Hung, T.N., Hoi, N.N. and Luong, N.T. 2015. State of the Hypophysis - Thyriod system when being supplied with iodine among the primary school pupils in uplands of Nghe An province. Academia Journal of Biology. 25, 1 (Aug. 2015), 45–50. DOI:https://doi.org/10.15625/0866-7160/v25n1.6800.