Position statement of the Surgery-AEC-COVID Working Group of the Spanish Association of Surgeons on the Planning of Surgical Activity during the second wave of the SARS-CoV-2 pandemic: Surgery must continue José Ma. Balibrea; Salvador Morales-Conde;

Impact of the pandemic on surgical activity in colorectal cancer in Spain. Results of a national survey Fernando de la Portilla de Juan; María Luisa Reyes Díaz; Irene Ramallo Solía;

Impact of sarcopenic obesity on surgical complications and oncologic outcomes of upper gastrointestinal tumors: a systematic review and meta-analysis Luz Divina Juez; Ana del Carmen Ortega; Pablo Priego; Juan Carlos García Pérez; José María Fernández-Cebrián; Jose I. Botella-Carretero;