Tungtong, P. (2011) “The Reliability of Transvaginal Ultrasonography for the Diagnosis of Incomplete Abortion after Spontaneous First-trimester Abortion”, Vajira Medical Journal : Journal of Urban Medicine, 50(2), pp. 73–80. available at: https://he02.tci-thaijo.org/index.php/VMED/article/view/276 (accessed: 21 September 2026).