Vitamins and iron blood biomarkers are associated with blood pressure levels in European adolescents. The HELENA study - Moraes, Augusto César Ferreira de; Gracia-Marco, Luis; Iglesia, Iris; González-Gross, Marcela; Breidenassel, Christina; Ferrari, Marika; Molnar, Dénes; Gómez-Martínez, Sonia; Androutsos, Odysseas; Kafatos, Anthony; Cuenca-García, Magdalena; Sjöström, Michael; et al. (Nutrition, 2014)