Charoenweerakul, P., Srisupundit, K., & Tongsong, T. (2012). Maternal Death at Maharaj Nakorn Chiang Mai Hospital, the 17 Years Experience. Thai Journal of Obstetrics and Gynaecology, 17(4), 230–236. retrieved from https://he02.tci-thaijo.org/index.php/tjog/article/view/1490