Furst, D. E., Keystone, E. C., Kirkham, B., Fleischmann, R., Mease, P., Breedveld, F. C., Smolen, J. S., Kalden, J. R., Burmester, G. R., Braun, J., Emery, P., Winthrop, K., Bresnihan, B., De Benedetti, F., Dörner, T., Gibofsky, A., Schiff, M. H., Sieper, J., Singer, N., Van Riel, P. L. C. M., Weinblatt, M. E., & Weisman, M. H. (n.d.). updated consensus statement on biological agents for the treatment of rheumatic diseases, 2008. Annals of the rheumatic diseases, 67, iii2–iii25. http://access.bl.uk/ark:/81055/vdc_100130162357.0x000058