Table 3. Recommendations for H. pylori eradication from the Maastricht IV/Florence Consensus Report.

Indication for H. pylori eradication	Recommendation
Populations at high-risk	A
First degree relatives of family members with gastric cancer	A
Chronic gastric acid inhibition over 1 year	A
Patients with previous gastric cancer treated with endoscopic or subtotal gastric resection	A
Strong environmental risk factors (heavy smoking, high exposure to dust, coal, quartz, cement and/or work in quarries)	A
Per patient’s request	A

Classification of recommendations: A (at least one randomized controlled trial in addition to consistent good quality literature), B (good quality clinical studies but no randomized clinical trials), C (absence of clinical studies of good quality, evidence obtained from expert committee reports and/or respected authorities).