1. The dentist’s role in the management of foreign bodies;Chipps;Dent Clin North Am,1957
2. Accidental swallowing of an endodontic instrument;Goultschin;Oral Surg,1971
3. Displaced post and core in epyglottic vallecula;Scott;J Gen Dent,1978
4. Prevention of swallowing or aspiration of foreign objects;Barkmeier;JADA,1978
5. Establishing an emergency airway;Korchin,1979