Elective versus non-elective surgery in the treatment of giant paraoesophageal hiatal hernia Ana María Fuentes Zaplana; José Ruiz Pardo; Pedro Antonio Sánchez Fuentes; Elisabet Vidaña Márquez; Luis Candil Valero; Daniel González Sánchez; Ricardo Belda Lozano; Ángel Reina Duarte;

Local resection in rectal cancer: When, who and how? Jesus Badia-Closa; Juan Pablo Campana; Gustavo Leandro Rossi; Xavier Serra-Aracil;

Local Excision for organ preservation in early REctal cancer with No Adjuvant treatment (LORENA Trial): prospective observational study protocol Rodrigo Tovar Pérez; Carlos Cerdán Santacruz; Óscar Cano-Valderrama; Fernando Jiménez Escovar; Blas Flor Lorente; Rodrigo O. Perez; Javier García Septiem;