Gastric BypassObesity, MorbidAnastomosis, Roux-en-YGastroplastyWeight LossBariatric SurgeryLaparoscopyBiliopancreatic DiversionPostoperative ComplicationsGlucagon-Like Peptide 1ObesityJejunostomyPostoperative PeriodSurgical StaplersPeptide YYSteatorrheaGastric FistulaJejunumTreatment OutcomeHyperoxaluriaStomachIncretinsFollow-Up StudiesBody Mass IndexGastrostomyPostoperative CareProspective StudiesTime FactorsAvitaminosisDiabetes Mellitus, Type 2Gastric Inhibitory PolypeptideFood PreferencesCoronary Artery Bypass, Off-PumpAppetite RegulationReoperationHerniaPostprandial PeriodSurgical StaplingBlood GlucoseOmentumJejunal DiseasesPreoperative PeriodAnastomosis, SurgicalConstriction, PathologicGhrelinRetrospective StudiesMalabsorption SyndromesNesidioblastosisAnastomotic LeakCandyNephrolithiasisSatiety ResponseJejunoileal BypassRisk FactorsGastrointestinal HormonesGastrectomyBody WeightHernia, AbdominalCaloric RestrictionGastroenterostomyLength of StayVascular PatencyCalcium CitrateSaphenous VeinPleasureComorbidityUtahDumping SyndromeEating