Ivonete Siviero1, Ivens Baker Méio1, Danielle Nunes Forny2, Marcos Antonio Turcatel2, André Lima da Cunha2, Betina Carla Bertrand Simões2
1Division of Pediatric Surgery, Department of Surgery, Medical School of Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; 2Division of Pediatric Surgery, Instituto de Pediatria e Puericultura Martagão Gesteira, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.