Al-beiruty, O.A. et al. 2008. The Effect of Omeprazol in the Treatment of Laryngeal Manifestations of Gastro-oesophageal Reflux. Journal of the Faculty of Medicine Baghdad. 50, 2 (Jul. 2008), 154–159. DOI:https://doi.org/10.32007/jfacmedbagdad.5021270.