Seropositive erosive rheumatoid arthritis (RA).

@article{Matthews2006SeropositiveER,
  title={Seropositive erosive rheumatoid arthritis (RA).},
  author={Clare Matthews and Oliver FitzGerald},
  journal={Rheumatology},
  year={2006},
  volume={45 9},
  pages={1100}
}