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. 2024;31(5):524-528. doi:10.53555/jptcp.v31i5.6188