Manouchehrian, Nahid, Ali Mohammadian, Mohammad Sadegh Sanie Jahromi, Nasrin Faridi Tazeh kand, and Mehdi Sanatkar. “A Comparison of the Therapeutic Effect of Tramadol and Meperidine for Treatment of Shivering After Spinal Anesthesia in Elective Caesarean Section”. Archives of Anesthesiology and Critical Care 1, no. 2 (October 3, 2015): 50-54. Accessed February 23, 2019. http://aacc.tums.ac.ir/index.php/aacc/article/view/15.