NawazH., FanC., KlokeJ., KhalidA., McGrathK., LandsittelD., and PapachristouG. “Performance Characteristics of Endoscopic Ultrasound in the Staging of Pancreatic Cancer: A Meta-Analysis”. JOP. Journal of the Pancreas, Vol. 14, no. 5, Sept. 2013, pp. 484-97, doi:10.6092/1590-8577/1512.