Vo, Tuan T., et al. “Evaluation of Analgesic Effects of Herbal Formula Qt-2 on Experimental Mice Model: Http: www.doi.org 10.26538 Tjnpr V7i8.16”. Tropical Journal of Natural Product Research (TJNPR), vol. 7, no. 8, Aug. 2023, pp. 3671-5, https://tjnpr.org/index.php/home/article/view/2409.