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APA Citation
Siddiqui, M. A., Tang, J., Khan, S., El Atrache, M., Varma, A., Aggarwal, R., & Jafri, S. (n.d.). a Case of Necrotising Pancreatitis Following Ampullary Biopsy. American journal of gastroenterology, 111, . http://access.bl.uk/ark:/81055/vdc_100123022787.0x000030