Clustering patterns of physical activity, sedentary and dietary behavior among European adolescents: The HELENA study oleh Manios Yannis, Rey-López Juan P, Kersting Mathilde, Gottrand Frederic, Zaccaria Maria, Dallongeville Jean, Cuenca-Garcia Magdalena, De Bourdeaudhuij Ilse, Benser Jasmin, Huybrechts Inge, Ottevaere Charlene, Molnár Dénes, Moreno Luis A, Smpokos Emmanouel, Widhalm Kurt, De Henauw Stefaan