Zaragoza-García I, Pérez-García S, Orellana-Miguel M de los Ángeles, Posé-Becerra C, Goñi-Olangua MA. The effectiveness of an online training program in a nursing unit: extraction of blood cultures. Rev. Esc. Enferm. USP. 2019;53:e03531. doi:10.1590/s1980-220x2018040003531