Pérez Sabido M, Pacheco Campello J, Vilar Villaseñor B. Cervical tumor as the only manifestation of pyriform sinus fistula. Rev Pediatr Aten Primaria. 2020;22:169-73.
Martínez Blanco J, García García E, Suárez Castañón C, Álvarez Zapico MJ. Congenital laryngeal membrane. Rev Pediatr Aten Primaria. 2013;15:248.e101-e104.