Chinvarakorn, S., H. Punpongwong, K. Thiparat, and K. Ungchusak. “Dengue Hemorrhagic Fever and Preventable DHF Cases at Samut Songkhram in 2007”. Journal of Health Science of Thailand, vol. 17, no. 5, Dec. 2017, pp. 751-60, https://thaidj.org/index.php/JHS/article/view/1279.