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Summary of EULAR terminology for phases of RA development (adapted from [3])
| Phase | Definition |
|---|---|
| A | Genetic risk factors for RA |
| B | Environmental risk factors for RA |
| C | Systemic autoimmunity associated with RA |
| D | Symptoms without clinical arthritis |
| E | Unclassified arthritis |
| F | Rheumatoid arthritis |
