Bae, Won-Sik, Dong-Yeop Lee, and Keon-Cheol Lee. “Effect of Sling Neck Flexion Exercise on Concentration and Brain Activity of Subjec Ts With Forward Head Posture”. International Journal of Psychosocial Rehabilitation 24, no. 7 (September 30, 2020): 1589–1595. Accessed March 3, 2026. https://psychosocial.com/index.php/ijpr/article/view/9669.