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APA Citation
Madhavan, S., & Smith, Z. L. (n.d.). s57 Opioid Use Patterns in Patients With Chronic Pancreatitis and Concomitant Mental Illness: A Propensity-Matched Cohort Analysis. American journal of gastroenterology, 117, e42–e43. http://access.bl.uk/ark:/81055/vdc_100169531716.0x000055