Dexmedetomidine enhances the efficacy of 0.25% ropivacaine for postoperative analgesia in pediatric caudal epidurals - Jain, Kavita; Sethi, Surendra Kumar; Yadav, Sohan Lal; Mathur, Veena; Thada, Beena; Garg, Deepak (Anaesthesia, Pain & Intensive Care, 2019)