Gutierrez, M., A. Becciolini, C. Bertolazzi, L. Di Geso, M. Tardella, A. Ariani, E. Filippucci, and W. Grassi. “Polyarthritis Flare in Patient With Ankylosing Spondylitis Treated With Infliximab”. Reumatismo, vol. 62, no. 3, Sept. 2010, pp. 221-4, doi:10.4081/reumatismo.2010.221.