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APA Citation
Bosworth, B., Gordon, G., Harper, J., & Zakko, S. (n.d.). effect of Prior Rectal Therapies on the Efficacy and Safety of Budesonide Foam in Patients with Ulcerative Proctitis (UP) or Ulcerative Proctosigmoiditis (UPS). American journal of gastroenterology, 111, . http://access.bl.uk/ark:/81055/vdc_100123022000.0x000015