References
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- Oddsson. Acta Pschyat. et neurol 1944; 19: 292
- Jerlang, Dederding. ibidem 1938; 13: 219
- Djørudcit, Jerlang, Dederding Rich. Bull. John Hopkins Hosp 1920; 31: 206–305
- Simpson. Annals o. Otolog 1947; 56: 1
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- Shambaugh. Arc. o. Otolaryng 1938; 27: 420
- Perlmann. ibidem 1939; 30(212)1943, 38.453