Self-perception of the acquisition of transferable competencies by the participants in a research congress for undergraduate students: A cross-sectional study oleh Luis-A. Arráez-Aybar, Javier Arias-Diaz, Sergio D. Paredes, Pilar Zuluaga-Arias, Margarita Chevalier, Elena Salobrar-Garcia, Luis Collado, Olivia Hurtado, Pilar Fernández-Mateos