Kanchanawat, S. (2000) “Duplex Transvaginal Ultrasonographic Images of Gestational Trophoblastic Tumors in Clinical Practice”, Thai Journal of Obstetrics and Gynaecology. Bangkok, Thailand, 12(3), pp. 223–231. available at: https://he02.tci-thaijo.org/index.php/tjog/article/view/256797 (accessed: 29 September 2026).