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APA Citation
Sampath, K., Hyder, S., Suriawinata, A., Gardner, T. B., & Gordon, S. R. (n.d.). ampullary Gangliocytic Paraganglioma Treated With Endoscopic Mucosal Resection. American journal of gastroenterology, 110, . http://access.bl.uk/ark:/81055/vdc_100123026173.0x00004b