A commentary of factors related to player availability and its influence on performance in elite team sports - Julio Calleja-González; Julio Calleja-González; Julio Calleja-González; Javier Mallo; Francesc Cos; Francesc Cos; Jaime Sampaio; Margaret T. Jones; Diego Marqués-Jiménez; Juan Mielgo-Ayuso; Tomás T. Freitas; Tomás T. Freitas; et al. (Frontiers Media S.A., 2023)