Perception-performance gap in trainee-performed pediatric caudal epidural block: Ultrasound verification of accuracy and clinical success. - Sinha, Divas; Waindeskar, Vaishali; Ahmad, Zainab; Jain, Shikha; Mandal, Pranita; Yadav, Ashima; Nag, Sutrishna; Richhariya, Suruchi (Saudi Journal of Anaesthesia, 2026)