Effect of ethnicity on disease activity in systemic lupus erythematosus [1] (multiple letters)

1. Calvo-Alén, J.
2. Vilá, L.M.
3. Reveille, J.D.
4. Alarcón, G.S.
5. Ghaussy, N.
6. Sibbitt Jr., W.L.
7. Bankhurst, A.D.