พัฒนาพิศาลศักดิ์ ช. “The Study of Maternal Death Problems in the Three Southern Border Provinces, Thailand, 2018- 2023”. Journal of Health Science of Thailand, vol. 32, no. 6, Dec. 2023, pp. 1025-34, https://thaidj.org/index.php/JHS/article/view/14901.