Bariatric SurgeryObesity, MorbidGastrectomyLaparoscopyGastroplastyGastric BypassGeneral SurgeryWeight LossAnastomosis, Roux-en-YTreatment OutcomeCholecystectomy, LaparoscopicPostoperative ComplicationsBiliopancreatic DiversionObesitySurgical Procedures, OperativeBody Mass IndexProspective StudiesSurgery Department, HospitalGastrointestinal HormonesSpecialties, SurgicalBariatric MedicineFollow-Up StudiesRetrospective StudiesGlucagon-Like Peptide 1StomachJejunoileal BypassGhrelinStomach NeoplasmsPostoperative CarePostoperative PeriodPreoperative PeriodHyperoxaluriaPostgastrectomy SyndromesAvitaminosisInternship and ResidencyPreoperative CareEducation, Medical, GraduateGastroenterostomyLength of StayTime FactorsLaparoscopesRats, Long-EvansAppendectomyBody WeightBariatricsIntraoperative ComplicationsBlood GlucoseOperative TimeSurgical Procedures, ElectiveRoboticsReoperation