GastrectomyLaparoscopyObesity, MorbidGeneral SurgeryBariatric SurgeryGastroplastyCholecystectomy, LaparoscopicGastric BypassWeight LossTreatment OutcomePostoperative ComplicationsLaparoscopesSpecialties, SurgicalSurgical Procedures, OperativeSurgery Department, HospitalAppendectomyAnastomosis, Roux-en-YStomach NeoplasmsStomachProspective StudiesRoboticsRetrospective StudiesIntraoperative ComplicationsGastrointestinal HormonesFollow-Up StudiesInternship and ResidencyPostgastrectomy SyndromesLength of StayPneumoperitoneum, ArtificialGastroenterostomyEducation, Medical, GraduateHernia, InguinalFundoplicationGhrelinGynecologic Surgical Procedures