Raghunath, A., Hungin, A., Wooff, D., & Childs, S. (2004). Systematic review: the effect of Helicobacter pylori and its eradication on gastro-oesophageal reflux disease in patients with duodenal ulcers or reflux oesophagitis. Alimentary Pharmacology and Therapeutics, 20(7), 733-744. https://doi.org/10.1111/j.1365-2036.2004.02172.x