| CAG | chronic atrophic gastritis |
| PG-I | Pepsinogen I |
| PG-II | Pepsinogen II |
| G17 | gastrin 17 |
| HP | Helicobacter pylori |
| NSAIDs | Non-Steroidal Anti-inflammatory Drugs |
| PPIs | proton pump inhibitors |
| µg | micrograms |
| pmol | picomoles |
| U/L | Unit/liter |
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