1. Perez Frias J, Caro Aguilera E, Perez Ruiz E, et al. Foreign body management. Combined bronchoscopy in a Paediatric Pulmonology Unit. An Pediatr. 2010;72(1):67-71.
2. Intrabronchial foreign body in adults: usefulness of computed tomography;Domingo Morera;Arch Bronconeumol,1997
3. Guillermo Reyes Y. Foreign bodies in the airways. Imedpub. 2013;9(2).
4. Cabezas L, Kuroiwa M. Foreign bodies in air. Medical Journal Clinica Las Condes. 2011;22(3):289-292.
5. Ferreras Amez JM, Andres Bergareche I, Abbey Gallego V, et al. Bronchial foreign body, an unsuspected pathology. 2012;16(13):3.