Berra Ramos, Silvina del Valle; Ravens-Sieberer, Ulrike; Erhart, Michael; Tebé, Cristian; Bisegger, Corinna; Duer, Wolfgang; Von Ruden, Ursula; Herdman, Michael; Alonso Caballero, Jordi; Rajmil Rajmil, Luis Alberto; European Kidscreen Group
(BioMed Central, 2007)
