Shaikh, Safiya Imtiaz, and Bheemas B. Atlapure. 2019. “Clonidine As an Adjuvant for Bupivacaine in Caudal Analgesia for Sub-Umbilical Surgery: A Prospective Randomized Double Blind Study”. Anaesthesia, Pain & Intensive Care, January, 240-46. https://www.apicareonline.com/index.php/APIC/article/view/352.