Comparison of five methods in predicting difficult laryngoscopy: Neck circumference, neck circumference to thyromental distance ratio, the ratio of height to thyromental distance, upper lip bite test and Mallampati test.
Adv Biomed Res. 2015 Jan 1;4:122.
Modified Mallampati test, thyromental distance and inter-incisor gap are the best predictors of difficult laryngoscopy in West Africans.
Can J Anaesth. 2005 Mar 1;52(3):291-6.
The predictive value of the ratio of neck circumference to thyromental distance in comparison with four predictive tests for difficult laryngoscopy in obstetric patients scheduled for caesarean delivery.
Adv Biomed Res. 2014 Jan 1;3:200.