Sai Krishna SVN, KRISHNABHAT RR, Kanakalakshmi S, Shenoy L, Malavika Kulkarni, satish A. Ultrasound-measured tongue thickness: a marker of difficult mask ventilation,  prospective observational study. J Crit Care Med. Published online September 29, 2026. doi:10.62838/jccm-2026-0054