Standardization of the definition of the types of oncological colectomy. Delphi method for consensus of experts of the Spanish Association of Surgeons Alvaro Garcia-Granero; Gonzalo P. Martín-Martín; Paula Dujovne-Lindenbaum; Carlos J. Alvarez Laso; Carlos Cerdán-Santacruz; Blas Flor-Lorente; Sebastiano Biondo;

To answer quickly or rigorously? Scientific strategies for the new surgical questions after the emergence of COVID-19 Javier Osorio; Zoilo Madrazo; Sebastiano Biondo;

Observational studies in surgical research Gianluca Pellino; Ewen M. Harrison; Sebastiano Biondo; Eloy Espín-Basany;