Thayawiwat, C., O. Wichaikham, and A. Painpringam. “Epidemiology of Streptococcus Suis Infection: Patients of Chiang Kham Hospital, 2009 - 2011”. Journal of Health Science of Thailand, vol. 21, no. 3, Dec. 2017, pp. 575-88, https://www.thaidj.org/index.php/JHS/article/view/1099.