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Katsidzira, Leolin; Mudombi, Wisdom F; Makunike-Mutasa, Rudo; Yilmaz, Bahtiyar; Blank, Annika; Rogler, Gerhard; Macpherson, Andrew; Vavricka, Stephan; Gangaidzo, Innocent; Misselwitz, Benjamin (2020). Inflammatory bowel disease in sub-Saharan Africa: a protocol of a prospective registry with a nested case-control study. BMJ open, 10(12), e039456. BMJ Publishing Group 10.1136/bmjopen-2020-039456
