Therdyotin, Kanchanit, Chalearm Glomgleang, Khamonwan Jaickoomkao, Somrat Bureerat, Theerachai Therdyotin, and Pramot Loeskhampom. 2018. “Efficacy of Water Mattress for the Treatment and Prevention of Pressure Ulcers”. Journal of Health Science of Thailand 27 (1):128-36. https://thaidj.org/index.php/JHS/article/view/2470.