Manowong, S., T. Borisuthipandit, and S. Inthapaen. “In-House Development of Automatic Iontophoresis Current Source for Sweat Chloride Test”. Journal of Associated Medical Sciences, vol. 53, no. 3, June 2020, pp. 8-14, https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/221761.