Cite
APA Citation
Kupferman, J., Ziv, Y., Herzog, S., Weiss, A., & Tokayer, A. (n.d.). effectiveness of Retroflexion Maneuver During Colonoscopy for Detecting Polyps. American journal of gastroenterology, 114, . http://access.bl.uk/ark:/81055/vdc_100123026539.0x000013