2Kumazawa T, Iwano T, Uohim K, et al. Eustachian tube function tests and their diagnostic potential in normal and diseased ear. Acta otolaryngol(stockb),1993. suppl 500:10-13.
3Westerman ST. Tasting instilled otologic drops is not a reliable test of Eustachian tube function Arch otolaryogol head neck surg,2000,126(8):1042.
4Megerian CA. Pedistric tympanoplasty and the role of preoperative Eustachian tube evaluation Arch otolaryngol head neck surg,2000,126(8):1039-1041.
6Karasen RM, varoglu E, Yildirim M, et al. Evaluation of Eustachian tube functio with ventilation scintigraphy by using 133 Xe gas The journal of laryngology and otology,1999,113(6):509-511.
7Holmquist J, Olen L. Evaluation of Eustachian tube fonction The journal of laryngology and otology, 1980,J94:15-23.
8Bluestone CD, Cantekin Et. Current clinical methods indications and interpretation of Eustachian tube function test Ann Otol Rhinol Laryngol,1981,90:552-562.
9Tideholm B Brattmo M Carlborg B Middle ear pressure: Effect of body position and sleep Acta otolaryngol(stockh),1999,119:880-885.
10Tideholm B, Carlborg B, Jonsson S, et al. Continuous long-term measurements of the middle ear pressure in subjects without a history of ear disease Acta otolaryngol(stockh),1998,118:369-374.