Akbar Ali, Khalil Ur Rehmam, Samir kabeer khan, Abdul satar, Muhammad Zahid khan. COMPARISON OF PAIN FREQUENCY IN PATIENTS UNDERGOING ELECTIVE SPINE SURGERY: VALSALVA MANEUVER VS. CONTROL GROUP DURING SPINAL ANESTHESIA. J Popl Ther Clin Pharmacol [Internet]. 2024 May 11 [cited 2024 Nov. 18];31(5):524-8. Available from: https://mail.jptcp.com/index.php/jptcp/article/view/6188