The natural flavonoid silybin improves the response to photodynamic therapy of bladder cancer cells - Gándara, L; Sandes, E; Di Venosa, G; Prack Mc Cormick, B; Rodriguez, L; Mamone, L; Batlle, A, 1; Eiján, AM; Casas, A (J Photochem Photobiol B, 2014)