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APA Citation
Lirhus, S. S., Lie Høivik, M., Moum, B., & Melberg, H. O. (n.d.). p191 Drug survival of biologics in Crohn's disease treatment in Norway. Journal of Crohn's and colitis, 13, S185–S186. http://access.bl.uk/ark:/81055/vdc_100094049925.0x000009