Is it possible to find a bifactor structure in the Fear of COVID-19 Scale (FCV-19S)? Psychometric evidence in an Ecuadorian sample. - Moreta-Herrera, Rodrigo; López-Calle, Claudio; Caycho-Rodríguez, Tomás; Cabezas Guerra, Christian; Gallegos, Miguel; Cervigni, Mauricio; Martino, Pablo; Barés, Ignacio; Calandra, Manuel (Death Studies, 2022)