Is there the same requirement to obtain the PhD degree in all the departments of surgery of the Spanish universities? Xavier Serra-Aracil; Manel Armengol Carrasco; Joan Morote Robles; Eloy Espin Basany; Natalia Amat-Lefort; Álvaro Serra-Gómez; Salvador Navarro-Soto;

PROFUGO study protocol: Predictive model for the early diagnosis of anastomotic leak after esophagectomy and gastrectomy Rocío Pérez Quintero; Marcos Bruna Esteban; Antonio José Serrano López;

Analysis of the broadcasting and perceived utility through the implementation of a virtual training platform during the pandemic Raquel Sánchez-Santos; Salvador Morales-Conde; Jose Luis Ramos Rodriguez; Estibaliz Alvarez Peña; Jose Manuel Aranda Narváez; Mario Alvarez Gallego; Josep María Badía; Jose Maria Balibrea del Castillo; Alejandra Garcia-Botella; Xavier Guirao Garriga; Eloy Espin Basany; Esteban Martin-Antona; Elena Martin Perez; Sagrario Martinez Cortijo; Isabel Pascual Miguelañez; Lola Perez Diaz; Ines Rubio Perez; Victoriano Soria Aledo;