Namwongsa, Suwalee, แหยมไทย กชกร, Jirunya Sangdak, and Mewadee Dan-a-nan. 2022. “Cervical Angles and the Relationship between Cervical Angles and Neck Disorders during Tablet Usage while Sitting in Class: A Pilot Study”. Journal of health and health management 8 (2). Bangkok, Thailand:143-56. https://he01.tci-thaijo.org/index.php/slc/article/view/255529.