Systemic lupus erythematosus: Predictors of its occurrence among a cohort of patients with early undifferentiated connective tissue disease: Multivariate analyses and identification of risk factors

1. Calvo-Alén, J.
2. Alarcón, G.S.
3. Burgard, S.L.
4. Burst, N.
5. Bartolucci, A.A.
6. Williams, H.J.