the impact of body mass index and helicobacter pylori infection on gastro-oesophageal reflux symptoms: a population-based study in northern norway. | increased body mass index (bmi) has been proposed as a risk factor for gastro-oesophageal reflux symptoms. the aim of this study was to evaluate the effect of bmi and helicobacter pylori on reflux symptoms in an adult population. | 2009 | 19593688 |