Zhu, Z. ., Mei, Z. ., Guo, Y. ., Wang, G. ., Wu, T. ., Cui, X. ., … Liu, C. . (2018). Reduced Risk of Inflammatory Bowel Disease-associated Colorectal Neoplasia with Use of Thiopurines: a Systematic Review and Meta-analysis. Journal of Crohn’s & Colitis. https://doi.org/10.1093/ecco-jcc/jjy006 (Original work published 2018)