“…Sample sizes ranged between 5 and 136 patients. INV angle readings were obtained by CT for 428 patients (62.5%) in 12 studies, 4 , 8 , 18 , 20 , 22 , 24 – 26 , 29 – 33 and endoscopy was used for 256 patients (37.5%) in 6 studies. 3 , 17 , 21 , 24 , 26 , 32 Studies included patients from seven ethnicities, including 160 Caucasians (26.4%), 4 , 18 , 21 , 24 , 25 , 28 – 31 99 Egyptians (16.3%), 8 , 26 30 Mexican-Hispanics (5.0%), 3 46 Asians (7.6%), 20 , 25 28 Turkish (4.6%), 17 75 Indians (12.4%), 32 and 136 Koreans (22.4%).…”