Is higher physical fitness associated with better psychological health in young pediatric cancer survivors? A cross-sectional study from the iBoneFIT project - Rodriguez-Solana, Andrea; Gracia-Marco, Luis; Llorente-Cantarero, Francisco J.; Cadenas-Sanchez, Cristina; Marmol-Perez, Andres; Gil-Cosano, Jose J.; Moliner-Urdiales, Diego; Ubago-Guisado, Esther (Scandinavian Journal of Medicine and Science in Sports, 2023)