Chatsiricharoenkul, S. “Single-Blind Randomized Controlled Trial of Poly-Herbal Formula Sahatsatara for Acute Low Back Pain: A Pilot Study”. Siriraj Medical Journal, vol. 68, no. 1, Mar. 2016, pp. 30-36, https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/55203.