Chaudhary, Waqas Ashraf, Jennifer Kennett RN, Ishrat Bano, and Daniel J. William. “Ketamine As an Adjuvant to Opioids for Cancer Pain Management”. Anaesthesia, Pain & Intensive Care (February 3, 2019): 174-178. Accessed November 23, 2024. https://mail.apicareonline.com/index.php/APIC/article/view/500.