Evolutionary analysis of patient¿s morbidity and mortality in emergency surgical care during the pandemic: Retrospective comparison between first and second waves of COVID-19 Carlos Bustamante Recuenco; Esther María Cano Pecharromán; Gloria María Mendoza Esparrell; Mahur Esmailli Ramos; Javier Broekhuizen Benítez; Leticia Martín Paniagua; Teresa Calderón Duque; Tomás Balsa Marín;

Impact of COVID-19 pandemic in thoracic surgery training in Spain Néstor J. Martínez-Hernández; Alilis Fontana Bellorín; José A. Cerón-Navarro; Alberto Cabañero Sánchez; Usue Caballero Silva; Pablo León Atance;

Proctologic emergency consultation during COVID-19: Comparative cross-sectional cohort study Rocío Maqueda Gonzalez; Carlos Cerdán Santacruz; Javier García Septiem; Lara Blanco Terés; Jose María Lopesino González; Guillermo Fernández Jiménez; Elena Martín-Pérez;