Effect of multidimensional lifestyle intervention on fitness and adiposity in predominantly migrant preschool children (Ballabeina): cluster randomised controlled trial - Puder, J J; Marques-Vidal, P; Schindler, C; Zahner, L; Niederer, I; Burgi, F; Ebenegger, V; Nydegger, A; Kriemler, S (BMJ, 2011)