T. Bashir, M. Q. Abbas, S. M. Abbas, V. Kumar, M. Chandio, and M. Siddique, “Efficacy of Upper Airway Angle and Glottic Height in Unanticipated Difficult Laryngoscopy Prediction: Upper Airway Angle and Glottic Height in Unanticipated Difficult Laryngoscopy Prediction”, PJHS-Lahore, vol. 7, no. 9, pp. 165–170, Sep. 2026.