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APA Citation
Bontà, J., Zeitz, J., Frei, P., Biedermann, L., Sulz, M. C., Vavricka, S. R., Scharl, S., Fried, M., Rogler, G., & Scharl, M. (n.d.). cytomegalovirus disease in inflammatory bowel disease. European journal of gastroenterology & hepatology, 28(11), . http://access.bl.uk/ark:/81055/vdc_100041981661.0x000034