Results of Biliopancreatic Diversion in Two Patients with Prader-Willi Syndrome - Almeida, Madson Queiroz de; Cercato, Cíntia; Rascovski, Alessandra; Goldbaum, Tatiana Silva; Figueiredo Daniela Andraus de; Matsuda, Mitsunori; Zilberstein, Bruno; Villares, Sandra Maria Ferreira; Halpern, Alfredo (Obesity Surgery, 2005)