Education and WHO Recommendations for Fruit and Vegetable Intake Are Associated with Better Cognitive Function in a Disadvantaged Brazilian Elderly Population: A Population-Based Cross-Sectional Study - Pastor-Valero, Maria; Furlan-Viebig, Renata; Menezes, Paulo Rossi; Silva, Simon Almeida da; Vallada, Homero; Scazufca, Marcia (PLOS ONE, 2014)