AN INADEQUATE FRUIT AND VEGETABLE INTAKE HAS ONLY A SMALL EFFECT ON VITAMIN STATUS IN EUROPEAN ADOLESCENTS- THE HELENA STUDY - Breidenassel, C.; Valtuena, J.; Spinneker, A.; Nova, E.; Cuenca-Garcia, M.; Benser, J.; De Henauw, S.; Kersting, M.; Kafatos, A.; Androutsos, O.; Nagy, P.; Moreno, L. A.; et al. (Annals Of Nutrition And Metabolism, 2013)