| | Words | Occurrences |
| | Authors’ keyword | | | Helicobacter-pylori | 5,245 | | Gastric cancer | 1,648 | | Pylori | 529 | | Gastritis | 446 | | Eradication | 317 | | CagA | 306 | | Inflammation | 293 | | Clarithromycin | 252 | | Children | 232 | | Endoscopy | 223 | | Epidemiology | 222 | | Peptic ulcer | 219 | | Antibiotic resistance | 206 | | Intestinal metaplasia | 204 | | Meta-analysis | 193 | | Stomach | 190 | | Polymorphism | 180 | | Helicobacter | 179 | | Helicobacter pylori infection | 177 | | Atrophic gastritis | 172 |
| | Abstract | | | Pylori | 43,231 | | Gastric | 29,727 | | Patients | 26,944 | | Infection | 17,392 | | Cancer | 15,470 | | Study | 14,285 | | Helicobacter | 14,130 | | Results | 12,002 | | Cells | 10,119 | | Risk | 9,185 | | Expression | 8,414 | | Eradication | 8,247 | | Significantly | 7,332 | | Treatment | 7,191 | | Therapy | 6,918 | | Methods | 6,635 | | Ci | 6,465 | | Analysis | 6,456 | | Gastritis | 6,069 | | Cell | 5,864 |
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