Has the COVID-19 pandemic changed the clinical picture and tumour stage at the time of presentation of patients with colorectal cancer? A retrospective cohort study Oscar Cano-Valderrama; Raquel Sánchez-Santos; Vincenzo Vigorita; Marta Paniagua; Erene Flores; Lucia Garrido; Cristina Facal; Alejandro Ruano; Alberto San-Ildefonso; Enrique Moncada;

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;

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;