ShahT.; LiddleR.; BranchM.; JowellP.; ObandoJ.; PoleskiM. Pilot Study of Aprepitant for Prevention of Post-ERCP Pancreatitis in High Risk Patients: A Phase II Randomized, Double-Blind Placebo Controlled Trial. JOP. Journal of the Pancreas, v. 13, n. 5, p. 514-518, 10 set. 2012.