Pham Thi, M. L. ., W. . Donpunha, S. . Nakmareong, P. . Auvichayapat, K. . Sawanyawisuth, and T. . Janyacharoen. “Effects of transcranial direct-current stimulation combined with physical therapy in chronic low back pain treatments: A randomized controlled pilot study”. Chulalongkorn Medical Journal, vol. 66, no. 2, Apr. 2022, https://he05.tci-thaijo.org/index.php/CMJ/article/view/72.