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Table 2 Ethnicity and type of study conducted

From: Is orbital floor a reliable and useful surgical landmark in endoscopic endonasal surgery?: a systematic review

Study Year Type Region Ethnic No. of Subject
Total Right Left
Casiano et al. [12]a 2001 Cadaver USA Caucasian 18
Harvey et al. [13] 2010 CT PNSb USA & Australia Caucasian 300 150 150
Lee et al. [15] 2012 CT PNSb Canada Caucasian 100 50 50
Wuttiwongsanon et al. [14] 2015 CT PNSb Thailand Asian 300 150 150
Lee [19] 2017 CT PNSb Korea Asian 230 115 115
Total 948   
  1. aright and left sides were not specified
  2. bCT PNS- computed tomography of the paranasal sinuses