1. Foreign Bodies in the Air and Food Passages; a Series of 250 cases;Norris;Ann. Otol., Rhinol. and Laryngol.,1948
2. Foreign Bodies in the Air and Food Passages; Observation on End-Results in a Series of 950 Cases;Clerf;Surg., Gynec. and Obst.,1940
3. Endoscopy for Foreign Body;Jackson;Ann. Otol., Rhinol. and Laryngol.,1936
4. Bones as Overlooked Foreign Bodies in the Lung;Jackson;Arch. Otolaryngol.,1930