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Heetun, Z.S., Keegan, D., O’Donoghue, D. et al. Report of successful use of ustekinumab in Crohn’s disease refractory to three anti-TNF therapies. Ir J Med Sci 183, 507–508 (2014). https://doi.org/10.1007/s11845-014-1107-2
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DOI: https://doi.org/10.1007/s11845-014-1107-2