Cite

    P Stamoulos et al.. “Azathioprine/allopurinol co-therapy is an effective treatment for patients with inflammatory bowel disease who exhibit no response or side-effects to thiopurines without the need for metabolite level measurements.” Gut, vol. 60, n.d., pp. A218–A219. http://access.bl.uk/ark:/81055/vdc_100135145581.0x00003f