Comparison of Dexmedetomidine or Clonidine As Adjuvant to Preemptive Thoracic Epidural Ropivacaine Analgesia With Propofol Based TIVA in Fast-Track Thoracic Anaesthesia for Open Thoracic Surgeries. ijabms 2021, 23 (36), 103-118. https://doi.org/10.48165/ijabms.2021.23111.