5.
Ambesh SP, Singh N, Rao PB, Gupta D, SinghPK, Singh U: A combination of the modifiedMallampati score, thyromental distance,anatomical abnormality, and cervical mobility(M-TAC) predicts difficult laryngoscopybetter than Mallampati classification. ActaAnaesthesiol 2013; 51: 58-62.