Nadeem A, Alwan B, Mezaal M. Developmental Changes of Axonal Excitability: Refractory Period Measurement in Normal Children. JFacMedBagdad [Internet]. 3Jul.2011 [cited 17Aug.2021];53(2):221-7. Available from: https://iqjmc.uobaghdad.edu.iq/index.php/19JFacMedBaghdad36/article/view/879