Comparison of Analgesic Effect of Dexmedetomidine versus Tramadol as Adjuvants to Caudal Ropivacaine in Infraumbilical Surgeries among Pediatric Patients: A Randomized Double Blind... oleh Bajrang Lal Yadav, Pratibha Rathore, Puspendra Bairwa, Chitra Singh, Gajendra Sharma