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APA Citation
Staller, K., Barshop, K., Ananthakrishnan, A. N., & Kuo, B. (2015). rectosigmoid Localization of Radiopaque Markers Does Not Correlate with Prolonged Balloon Expulsion in Chronic Constipation: Results from a Multicenter Cohort. American journal of gastroenterology, 110, . http://access.bl.uk/ark:/81055/vdc_100122861707.0x00005e