Screening prior to biological therapy in Crohn’s disease: adherence to guidelines and prevalence of infections. Results from a multicientre retrospective study.

van der Have M, Belderbos TD, Fidder HH, Leenders M, Dijkstra G, Peters CP, Eshuis EJ, Ponsioen CY, Siersema PD, van Oijen MG, Oldenburg B; Dutch Initiative on Crohn and Colitis (ICC).
Dig Liver Dis.  2014 Oct;46(10):881-6