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APA Citation
Batheja, M., Harrison, M. E., Das, A., Engel, R., & Crowell, M. (2013). optimal Positioning for ERCP: Efficacy and Safety of ERCP in Prone versus Left Lateral Decubitus Position. ISRN endoscopy, 2013, . http://access.bl.uk/ark:/81055/vdc_100082269594.0x00000d