Predicting Sensory Block Level in Caudal Anesthesia Based on Sacral Canal Anatomical Parameters and Height: Development of an Ordinal Logistic Regression Model and Nomogram. - Li, Zhengying; Wu, Haixuan; Zhang, Simin; Yu, Shuailong; Liu, Ling; Liufu, Ning (Therapeutics & Clinical Risk Management, 2026)