Puntumetakul, R., W. Vattanasilp, S. Phadungkit, P. Sisisarn, P. Krangsantherat, S. Phusheun, M. Sadesadavit, and C. Huanglengklang. “The relationships between gender body mass index and lumbar spinal curvature in standing position using the flexible ruler”. Archives of Allied Health Sciences, vol. 13, no. 1, Apr. 2001, pp. 20-29, https://he01.tci-thaijo.org/index.php/ams/article/view/65966.