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  Indian J Med Microbiol
 

Figure 1: A plate showing land-marks used for measurement of Length (AB), Depth (CD) of frontal sinus. A = Apex of Sinus. B = Roof of Orbit C = Anterior Table D = Posterior Table

Figure 1: A plate showing land-marks used for measurement of Length (AB), Depth (CD) of frontal sinus. A = Apex of Sinus. B = Roof of Orbit C = Anterior Table D = Posterior Table