Algassim, A., N. Alghonaim, I. . Alruzug, M. S. Elbayoumy, and A. Atallah. “Systemic Lupus Erythematosus With Crohn’s Disease: A Rare Combination and Unusual Presentation”. European Journal of Case Reports in Internal Medicine, vol. 8, no. 6, June 2021, doi:10.12890/2021_002678.