Crossover study of diets enriched with virgin olive oil, walnuts or almonds: effects on lipids and other cardiovascular risk markes - Damasceno, Nágila Raquel Teixeira; Pérez-Heras, Ana; Serra, Mercè; Cofán, Montserrat; Sala-Vila, Aleix; Salas-Salvadó, Jordi; Ros, Emili (Nutrition, Metabolism & Cardiovascular Diseases, 2011)