Pancreatic DiseasesPancreatitisPancreatic Function TestsPancreatic JuicePancreatitis, ChronicPancreatic NeoplasmsPancreaspara-AminobenzoatesAmylasesBiliary Tract DiseasesPancreatic DuctsPancreatitis, AlcoholicPancreas, Exocrine4-Aminobenzoic AcidPancreatic CystPanniculitisClinical Enzyme TestsSecretinCA-19-9 AntigenIsoamylaseAminobenzoatesChronic DiseaseExocrine Pancreatic InsufficiencyPancreatectomyCholangiopancreatography, Endoscopic RetrogradeEndosonographyPancreatic PseudocystTrypsinogenSphincter of OddiCholangiographyCarcinoma, Pancreatic DuctalDuodenumAcute DiseaseUltrasonographyLipaseTrypsinAmpulla of VaterSensitivity and SpecificityBicarbonatesTomography, X-Ray ComputedRetrospective StudiesDelayed DiagnosisCystic Fibrosis Transmembrane Conductance RegulatorPrenatal DiagnosisEarly DiagnosisAdenocarcinomaCystic FibrosisTumor Markers, BiologicalAlcoholismProspective StudiesCase-Control StudiesMutation