ROUX EN Y GASTRIC BYPASS AND POSTOPERATIVE ABDOMINAL PAIN. VALUE OF HEPATOBILIARY IMINODIACETIC ACID SCAN IN THE DIAGNOSIS Post-operative complications - Ferrigni, C J; Garcia, A; Castellon, C; Ruiz-Tovar, J; Zarain, L; Artunedo, P; Martin, E; Alias, D; Diaz, G; Duran, M (Obesity Surgery, 2019)