David Martínez-Cecilia1, Lalin Navaratne2, Alberto Martínez Isla3. 1. Unidad de Cirugía Hepatobiliar, Servicio de Cirugía General y Aparato Digestivo, Complejo Hospitalario Universitario de Toledo, Toledo, España. 2. Department of Upper GI Surgery, Northwick Park and St Mark's Hospitals, London North West University Healthcare NHS Trust, Londres, Reino Unido. 3. Department of Upper GI Surgery, Northwick Park and St Mark's Hospitals, London North West University Healthcare NHS Trust, Londres, Reino Unido. Electronic address: alberto.isla00@gmail.com.