Bryan, Yvon F., Kathleen N. Johnson, and Zachary Riley. 2019. “The Use of Digital Imaging to Measure the Tongue and Unoccupied Area in the Oral Cavity: An Alternative Technique for Precise Objective Airway Assessment”. Anaesthesia, Pain & Intensive Care, January, 301-7. https://mail.apicareonline.com/index.php/APIC/article/view/65.