Liabsuetrakul, Tippawan, and Oermporn Krisanapan. “The outcomes of vaginal bleeding in the first half of pregnancy at Songklanagarind Hospital”. Thai Journal of Obstetrics and Gynaecology 11, no. 2 (June 1, 1999): 75–80. accessed September 29, 2026. https://he02.tci-thaijo.org/index.php/tjog/article/view/257155.