Divecha NP, Patel DKC. Comparison Between two Different Doses of Ketamine as Pre-Emptive Analgesic in Patients of Laparoscopic Cholecystectomy for Postoperative Analgesia. AAN [Internet]. 2022Jun.30 [cited 2024Apr.20];7(1):30-5. Available from: https://aijournals.com/index.php/aan/article/view/2344