Bin Liu, Qingda Wu, Wuhua Ma, Lu Chen, Ruiming Du, Qi Zou, Zhenhao Ding, Xiaoxia Zheng, Zhenwei Zheng. "Prediction of difficult airways in elderly patients using bedside ultrasound: a prospective single-blind observational study." Scientific Reports, 2026. doi:10.1038/s41598-026-60872-5