1. Non-erosive reflux disease (NERD); part of the spectrum of gastro-oesophageal reflux, a component of functional dyspepsia, or both?;Quigley;European Journal of Gastroenterology and Hepatology,2001
2. Gastro-oesophageal reflux disease—spectrum or continuum?;Quigley;Quarterly Journal of Medicine,1997
3. Non-erosive reflux disease (NERD)—current concepts and dilemmas;Fass;American Journal of Gastroenterology,2001
4. Gastroesophageal reflux disease—should we adopt a new conceptual framework?;Fass;American Journal of Gastroenterology,2002
5. Non-erosive reflux disease: the real problem in gastroesophageal reflux disease;Quigley;Digestive and Liver Disease,2001