Eaimchaloay, S. ., R. . Kalayasiri, and S. . Prechawit. “Characteristics and physical outcomes of kratom users at a substance abuse treatment center”. Chulalongkorn Medical Journal, vol. 63, no. 3, Aug. 2023, https://he05.tci-thaijo.org/index.php/CMJ/article/view/296.