Veena, Asthana, Agrawal Amit, Sharma Jagdish P, and Gupta V. “Comparison of Intrathecal Sufentanil and Morphine in Addition to Bupivacaine for Caesarean Section under Spinal Anesthesia”. Anaesthesia, Pain & Intensive Care (February 5, 2019): 99-101. Accessed July 3, 2024. https://apicareonline.com/index.php/APIC/article/view/536.