IncretinsGastric Inhibitory PolypeptideGlucagon-Like Peptide 1Pancreas, ExocrineExocrine GlandsDipeptidyl-Peptidase IV InhibitorsDipeptidyl Peptidase 4Exocrine Pancreatic InsufficiencyGlucagon-Like PeptidesPancreasReceptors, GlucagonGastric BypassGlucagonDiabetes Mellitus, Type 2Pancreatic JuiceInsulinInsulin-Secreting CellsObesity, MorbidBariatric SurgeryBlood GlucoseHypoglycemic AgentsAmylasesPancreatic Function TestsPostprandial PeriodGlucoseSecretinGlucose Tolerance TestPancreatic DiseasesCholecystokininPancreatinChymotrypsinogenPancreatic DuctsAcinar CellsCeruletidePancreatitis