Singh, Sanjay, M. K. Giri, Mayurika Singh, and Navin Kumar Giri. “A Clinical Comparative Study of Intraperitoneal Instillation of Ropivacaine Alone or Ropivacaine With Nalbuphine for Postoperative Analgesia in Laparoscopic Cholecystectomy”. Anaesthesia, Pain & Intensive Care (January 20, 2019): 335-339. Accessed November 23, 2024. https://mail.apicareonline.com/index.php/APIC/article/view/135.