Fig. 2From: Fasting salivary pepsin level as a reliable non-invasive method of screening for laryngopharyngeal reflux in Egyptian patients A Correlation between salivary pepsin and age. B Correlation between salivary pepsin and urea. C Correlation between salivary pepsin and laryngoscope abnormality. D Correlation between salivary Pepsin and pH-metry (% Time pH < 4)Back to article page