1. Ross AHM, McCormack RJM. Foreign body inhalation. J R Coll Surg Edinb 1980; 25: 104–109.
2. Kim IG, Brummitt WM, Humphry A, Siomra SW, Wallace WB. Foreign body in the airway: A review of 202 cases. Laryngoscope 1973; 83: 347–354.
3. Haugen RK. The cafe coronary: sudden deaths in restaurants. JAMA 1963; 186: 142–143.
4. Glenn WWL, Leibson AA, Lindskog GE. Thoracic and cardiovascular surgery with related pathology. 3d Ed. New York: Appleton-Century-Crofts, 1975: 113.
5. Jackson C, Jackson CL. Bronchoscopy, esophagoscopy and gastroscopy. Philadelphia: Saunders, 1934: 185.