1. Zhou P, Yang XL, Wang XG, et al. A pneumonia outbreak associated with a new coronavirus of probable bat origin. Nature 2020;579:270-273.
2. Nakase H, Matsumoto T, Matsuura M, et al. Expert opinions on the current therapeutic management of inflammatory bowel disease during the COVID-19 pandemic: Japan IBD COVID-19 Taskforce, Intractable Diseases, the Health and Labor Sciences Research. Digestion 2021;102:814-822.
3. Magro F, Rahier JF, Abreu C, et al. Inflammatory bowel disease management during the COVID-19 outbreak: the ten do’s and don’ts from the ECCO-COVID taskforce. J Crohns Colitis 2020;14:S798-S806.
4. Saniabadi AR, Hanai H, Takeuchi K, et al. Adacolumn, an adsorptive carrier based granulocyte and monocyte apheresis device for the treatment of inflammatory and refractory diseases associated with leukocytes. Ther Apher Dial 2003;7:48-59.
5. Harbord M, Eliakim R, Bettenworth D, et al. Third European evidence-based consensus on diagnosis and management of ulcerative colitis. Part 2: current management. J Crohns Colitis 2017;11:769-784.
8. Kashiwagi N, Sugimura K, Koiwai H, et al. Immunomodulatory effects of granulocyte and monocyte adsorption apheresis as a treatment for patients with ulcerative colitis. Dig Dis Sci 2002;47:1334-1341.
9. Sands BE, Sandborn WJ, Feagan B, et al. A randomized, double-blind, sham-controlled study of granulocyte/monocyte apheresis for active ulcerative colitis. Gastroenterology 2008;135:400-409.
10. Zhu M, Xu X, Nie F, Tong J, Xiao S, Ran Z. The efficacy and safety of selective leukocytapheresis in the treatment of ulcerative colitis: a meta-analysis. Int J Colorectal Dis 2011;26:999-1007.
12. Sakuraba A, Motoya S, Watanabe K, et al. An open-label prospective randomized multicenter study shows very rapid remission of ulcerative colitis by intensive granulocyte and monocyte adsorptive apheresis as compared with routine weekly treatment. Am J Gastroenterol 2009;104:2990-2995.
13. Yoshino T, Nakase H, Minami N, et al. Efficacy and safety of granulocyte and monocyte adsorption apheresis for ulcerative colitis: a meta-analysis. Dig Liver Dis 2014;46:219-226.
14. Lichtiger S, Present DH, Kornbluth A, et al. Cyclosporine in severe ulcerative colitis refractory to steroid therapy. N Engl J Med 1994;330:1841-1845.
15. Ng SC, Mak JWY, Hitz L, Chowers Y, Bernstein CN, Silverberg MS. COVID-19 pandemic: which IBD patients need to be scoped-who gets scoped now, who can wait, and how to resume to normal. J Crohns Colitis 2020;14:S791-S797.
16. Shinzaki S, Matsuoka K, Iijima H, et al. Leucine-rich alpha-2 glycoprotein is a serum biomarker of mucosal healing in ulcerative colitis. J Crohns Colitis 2017;11:84-91.
17. Jose RJ, Manuel A. COVID-19 cytokine storm: the interplay between inflammation and coagulation. Lancet Respir Med 2020;8:e46-e47.