PancreatitisPancreatitis, Acute NecrotizingAcute DiseaseCeruletideAmylasesPancreasPancreatic DiseasesPancreatitis, ChronicAPACHEPancreatitis, AlcoholicSeverity of Illness IndexPostoperative ComplicationsCholangiopancreatography, Endoscopic RetrogradeTrypsinogenPancreatic DuctsPancreatic PseudocystTreatment OutcomeRetrospective StudiesIntraoperative ComplicationsLipasePancreatic Function TestsPancreas, ExocrineGallstonesAcinar CellsDrainageBiliary Tract DiseasesHyperamylasemiaChronic DiseaseSphincterotomy, EndoscopicCholangiopancreatography, Magnetic ResonanceTomography, X-Ray ComputedAbdominal PainPancreatic NeoplasmsCholelithiasisTime Factors