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APA Citation
Strik, A., Löwenberg, M., Ponsioen, C., Gecse, K., Buskens, C., Bemelman, W., & D'Haens, G. (n.d.). oP005 Higher anti-TNF serum levels are associated with perianal fistula closure in Crohn's disease patients. Journal of Crohn's and colitis, 12, S004. http://access.bl.uk/ark:/81055/vdc_100095516517.0x000010