Incidence of Post-Endoscopic Retrograde Cholangiography Pancreatitis (PEP) According to the Protocol of Prophylaxis Used. a Retrospective, Cross-Sectional Observational Study - Iglesias-Garcia, J; Parma Caputo, LF; Mejuto, R; Ureña Campos, R; De la Iglesia-Garcia, D; Lariño-Noia, J; Iglesias-Canle, J; Dominguez-Muñoz, JE (Endoscopy, 2021)