Serna López, Ángela M.; Donado Gómez, J. H. .; Giraldo Villa, A.; Mustiola Calleja, K. G.; López Gómez, L. M. .; Pérez Mejía, C.; Toro Escobar, J. M. Preoperative Psychological Conditions and Their Effect on Weight Loss During the First 18 Months Post-Surgery in Obese Patients Undergoing Gastric Bypass. Med UPB 2014, 33 (2), 106-116.