Bariatric surgery is the most effective long-term treatment for morbid obesity, reducing obesity-associated comorbidities. The purpose of the present study was to evaluate G308A polymorphism of the tumor necrosis factor (TNF) alpha gene on outcomes 1 year after biliopancreatic diversion.
Unit of Investigation, Surgical Department, Hospital Rio Hortega, Institute of Endocrinology and Nutrition, Medicine School, University of Valladolid, Simancas 47130, Valladolid, Spain. dadluis@yahoo.es