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APA Citation
Then, E. O., Shah, J. M., Grantham, T., Ramachandran, R., Uhlenhopp, D. J., Sunkara, T., Reddy, M., & Gaduputi, V. (n.d.). s3363 Post Endoscopic Retrograde Cholangiopancreatography Pancreatitis in Chronic Opiate Users: A National Cohort Study. American journal of gastroenterology, 116, S1386. http://access.bl.uk/ark:/81055/vdc_100144524410.0x00000a