References
- Flisberg K., Ingelstedt S., Örtegren U. Controlled “Ear Aspiration” of air. A “physiological” test of the tubal function. Acta oto-laryng., Stockh. 1963; 35, Suppl. 182
- Miller G. Eustachian tubal function in normal and diseased ears. Arch. Otolaryng., Chic 1965; 81: 41