Panadanabiona, Sahitya C. “Alterations in Aminergic System of Rat Brain by the Opioid Analgesic Tramadol in the Absence of Pain-Induction”. International Journal of Basic & Clinical Pharmacology 6, no. 12 (November 23, 2017): 2774–2782. Accessed March 29, 2024. https://www.ijbcp.com/index.php/ijbcp/article/view/2124.