Endogenous hyperinsulinemic hypoglycemia: Diagnostic strategies, predictive features of malignancy and long-term survival - Almeida, M. Queiroz; Machado, M. Cerqueira Cesar; Correa-Giannella, M. L.; Giannella Neto, D.; Pereira, M. A. Albergaria (Journal of Endocrinological Investigation, 2006)