1. Liaquat Ali:
Department of Anesthesiology, Critical Care and Pain Medicine, Foundation University Medical College, Fauji Foundation Hospital,Rawalpindi,Pakistan
2. Khaleel Ahmad:
Department of Anesthesiology, Critical Care and Pain Medicine Foundation University Medical College, Fauji Foundation Hospital, Rawalpindi, Pakistan.
3. Umer Ali:
Pain Medicine Anesthetist, Department of Anesthesiology, Critical Care and Pain Medicine Foundation University Medical College, Fauji Foundation Hospital, Rawalpindi, Pakistan