Rectal versus intramuscular diclofenac in prevention of post-endoscopic retrograde cholangiopancreatography pancreatitis: experience of a Greek tertiary referral center. - Kalantzis, Ioannis; Poulou, Androniki; Papatheodorou, Athanasios; Gkoumas, Konstantinos (Annals of Gastroenterology, 2020)