Upadhyay, DK, S Palaian, PV Kishore, R Paudel, M Prabhu, PR Shankar, and P Mishra. “Tramadol”. Journal of Institute of Medicine Nepal 28, no. 3 (October 22, 2007): 57–61. Accessed May 19, 2024. https://nepjol.info/index.php/JIOM/article/view/633.