National survey on the treatment of cholelitiasis in Spain during the initial period of the COVID-19 pandemic Benedetto Ielpo; Mikel Prieto; Irene Ortega; José María Balibrea; Inés Rubio-Pérez; Montse Juvany; Miguel Ángel Gómez-Bravo; José Manuel Ramia;

Recommendations on intervention for hepatobiliary oncological surgery during the COVID-19 pandemic Alejandra García Botella; Miguel Angel Gómez Bravo; Marcello Di Martino; Mikel Gastaca; Elena Martín-Pérez; Santiago Sánchez Cabús; Belinda Sánchez Pérez; Santiago López Ben; Juan Carlos Rodríguez Sanjuán; Rafael López-Andújar; Manuel Barrera;

Implantable venous devices: main complications and associated risk factors Isabel Casal-Beloy; Alejandra García-Novoa;