Statement 19: The effectiveness of on-demand proton pump inhibitor therapy is comparable with that of continuous daily proton pump inhibitor therapy for the long-term management of patients with non-erosive reflux disease or mild erosive reflux disease.      Level of evidence: moderate      Strength of recommendation: weak      Experts’ opinions: agree strongly (31.1%), agree with some reservations (57.8%), undecided (11.1%), disagree (0.0%), and disagree strongly (0.0%)