Common sources and composition of phytosterols and their estimated intake by the population in the city of São Paulo, Brazil - Martins, Celma Muniz; Fonseca, Francisco Antonio; Izar, Maria Cristina; Ballus, Cristiano Augusto; Meinhart, Adriana Dillenburg; Godoy, Helena Teixeira de; Figueiredo Neto, Antonio Martins (NUTRITION, 2013)