Blunt and penetrating neck injury. reference B.J.Bailey,et al. Head & Neck surgery Otolaryngology.4 th edition.2006 Charles W. Cummings, et al, Cummings.
Preliminary training course on diagnostic upper gastrointestinal endoscopy
Ranges from nasal obstruction till larynx and upper trachea. Obstruction of the portion of the airways located above the thoracic inlet.
