Mousavi, Seyed Mojtaba, and Reza Aminnejad. 2019. “The Effect of Addition of Intrathecal Sufentanil to Hyperbaric Bupivacaine in Cesarean Section- a Prospective Randomized Study”. Anaesthesia, Pain & Intensive Care 23 (1). https://mail.apicareonline.com/index.php/APIC/article/view/1006.