S, Nirmala, and Kalaivani B. “A Comparative Study To Predict Difficult Intubation By Using Palm Print, Prayer’s Sign, And Upper Lip Bite Test In Diabetic And Non- Diabetic Patients”. Journal of Neonatal Surgery 14, no. 12S (April 9, 2025): 727–735. Accessed March 3, 2026. https://jneonatalsurg.com/index.php/jns/article/view/3327.