Jejunoileal BypassHyperlipidemiasPancreatitisPancreatitis, ChronicPancreatitis, Acute NecrotizingPancreatitis, AlcoholicCeruletideFatsDietary FatsPancreasAmylasesAcute DiseaseTrypsinogenCholangiopancreatography, Endoscopic RetrogradePancreatic DuctsPancreatic PseudocystPancreatic DiseasesLipaseFat BodyPancreas, ExocrinePancreatic Function Tests