E. Kopanaki, M. Piagkou, T. Demesticha, E. Anastassiou, and P. Skandalakis, “A Novel Test, the Sternomental Distance Ratio, Used as a Predictor of Difficult Laryngoscopy in a Normal Population and in Thyroid Tumor Surgery Patients: A Preliminary Study”, ama, vol. 49, no. 3, pp. 249–254, Mar. 2021.