Skare, T. L., Ferri, K. and Santos, M. A. (2014) “Systemic lupus erythematosus activity and beta two microglobulin levels”, São Paulo Medical Journal, 132(4), pp. 239–242. Available at: https://periodicosapm.emnuvens.com.br/spmj/article/view/1219 (Accessed: 12 March 2025).