Banerjee S, Pattnaik SK. A COMPARITIVE STUDY BETWEEN EPIDURAL BUTORPHANOL, NALBUPHINE AND FENTANYL FOR POSTOPERATIVE ANALGESIA IN LOWER ABDOMINAL SURGERIES. Asian J Pharm Clin Res [Internet]. 2017 May 1 [cited 2024 May 16];10(5):383-8. Available from: https://journals.innovareacademics.in/index.php/ajpcr/article/view/16802