Genotype distributions in top-level soccer players: a role for ACE? - Juffer, P; Furrer, R; Gonzalez-Freire, M; Santiago, C; Verde, Z; Serratosa, L; Morate, F J; Rubio, J C; Martin, M A; Ruiz, J R; Arenas, J; Gomez-Gallego, F; Lucia, A (Int J Sports Med, 2009)