<prompt> All are true regarding Barretts oesophagus exceptOver production of epidermal growth factor from salivaDecreased esophageal pHDecreased esophageal motilityDuodenogastric reflux  <response>: Epidermal growth factor from saliva is found to be protective against the damage of esophageal mucosa due to reflux based on various studies Duodenogastric reflux increases biliary exposure of lower esophagus and it has been found biliary reflux causes more damage than gastric reflux Decreased clearance of esophagus by peristalsis and retention of acidic contents lowpH in lower esophagus causes more damage 