Abstract
References
1.
Stammberger
H.R.
Functional Endoscopic Sinus Surgery: The Messerklinger Technique. Philadelphia : B.C. Decker ; 1991 .
2.
Yanagisawa
E.
,
Joe
J.K.
,
Christmas
D.A.
Where is the ostium of the ethmoid bulla? Ear Nose Throat J 1999 ; 78 (12 ): 886 –7 .