Raiger, Lalit K., Sandeep Sharma, Pramod Jain, and Shailendra Pareek. 2019. “Intrathecal Low Dose Bupivacaine With Fentanyl or Clonidine in TURP Surgery: A Prospective Randomized Double Blind Study”. Academia Anesthesiologica International 3 (2), 13-17. https://doi.org/10.21276/aan.2018.3.2.3.