Polypharmacy among people with rheumatoid arthritis: the role of age, disease duration and comorbidity.

1. Treharne, G.J.
2. Douglas, K.M.
3. Iwaszko, J.
4. Panoulas, V.F.
5. Hale, E.D.
6. Mitton, D.L.
7. Piper, H.
8. Erb, N.
9. Kitas, G.D.