Kotagiri , Dr Sudheer Kumar, și Dr Ashok Gunda. „Incidence and predictors of difficult airway in elective surgical patients: A hospital-based observational study”. Student’s Journal of Health Research Africa 6, no. 12 (decembrie 10, 2025): 8. Data accesării octombrie 28, 2026. http://sjhrafrica.org.sjhresearchafrica.org/index.php/public-html/article/view/2248.