Chanavirut, R., R. Yensano, P. Yonglitthipagon, S. Nakmareong, L. Chaipattaranun, and W. Jaratpongtakul. “A modifying respiratory muscle device: development and pilot testing”. Journal of Associated Medical Sciences, vol. 58, no. 3, Aug. 2025, pp. 313-20, https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/279284.