Current obesity treatment: A story about beliefs, devotion and confrontation José María Balibrea; María Recarte-Rico; María Dolores Frutos;

Liver xenotransplantation: Time to make the leap to the clinic Pablo Ramírez; Antonio Muñoz;

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;