GastroplastyWeight LossObesity, MorbidJejunoileal BypassGastric BypassAnastomosis, Roux-en-YPirinitramideBody WeightStomachSurgical StaplersHernia, HiatalObesityBariatric SurgeryEsophageal StenosisWeight GainDiet, ReducingFundoplicationEsophagusLaparoscopyPostoperative ComplicationsWeight Reduction ProgramsPostoperative PeriodFollow-Up StudiesMolecular WeightMethodsReoperationGastroesophageal RefluxBirth WeightBody Mass IndexOverweightAnti-Obesity AgentsEnergy Intake