Helicobacter pylori infection is a protective factor for bleeding gastric ulcers but not for bleeding duodenal ulcers in NSAID users.
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D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000008:administration & dosage / Q000009:adverse effects* / Q000627:therapeutic use; D016481:Helicobacter Infections / Q000150:complications / Q000188:drug therapy*; D016480:Helicobacter pylori / Q000472:pathogenicity*; D006801:Humans; D010438:Peptic Ulcer Hemorrhage / Q000139:chemically induced*; D015203:Reproducibility of Results; D012107:Research Design; D012307:Risk Factors; D018401:Sample Size; D013276:Stomach Ulcer / Q000150:complications / Q000188:drug therapy*
D000894:Anti-Inflammatory Agents, Non-Steroidal