Bariatric SurgeryObesity, MorbidGastric BypassLaparoscopyGeneral SurgeryGastroplastyWeight LossAnastomosis, Roux-en-YCholecystectomy, LaparoscopicPostoperative ComplicationsBiliopancreatic DiversionTreatment OutcomeSurgery Department, HospitalSurgical Procedures, OperativeSpecialties, SurgicalObesityPostoperative PeriodPostoperative CareHyperoxaluriaRetrospective StudiesJejunoileal BypassProspective StudiesAvitaminosisPreoperative PeriodFollow-Up StudiesBody Mass IndexInternship and ResidencyLength of StayGastrectomyEducation, Medical, GraduatePreoperative CareGastric FistulaBariatric MedicineIntraoperative ComplicationsGlucagon-Like Peptide 1Time FactorsLaparoscopesAppendectomyPeptide YYReoperationSurgical Procedures, ElectiveVascular Surgical ProceduresRoboticsDiabetes Mellitus, Type 2JejunostomyRisk FactorsMalabsorption SyndromesSuture TechniquesHernia, InguinalFellowships and ScholarshipsSurgical StaplersOperative TimeCareer ChoiceClinical CompetenceGynecologic Surgical ProceduresBariatricsIncretinsStomachPain, PostoperativeGastrointestinal HormonesPneumoperitoneum, ArtificialSurgical StaplingAmbulatory Surgical ProceduresTraumatology