Hernández-Camba, A., S. Lakhwani, L. Ramos, J. Raya, and E. Quintero. “Cytomegalovirus-Associated Hemophagocytic Syndrome in a Patient With Crohn’s Disease Receiving Azathioprine”. Journal of Gastrointestinal and Liver Diseases, Vol. 22, no. 4, Dec. 2013, pp. 471-4, https://jgld.ro/jgld/index.php/jgld/article/view/2013.4.191.