Clinical trials and drug cost savings for Italian health service. - D'Ambrosio, Francesca; De Feo, Gianfranco; Botti, Gerardo; Capasso, Arturo; Pignata, Sandro; Maiolino, Piera; Triassi, Maria; Nardone, Antonio; Perrone, Franco; Piezzo, Michela; Grimaldi, Antonio Maria; Palazzo, Ida; et al. (BMC Health Services Research, 2020)