1.
Sukcharoen N, Phaosavasdi S. Transvaginal Sonography in the Diagnosis of Ectopic Pregnancy. Thai J Obstet Gynaecol [internet]. 1992 Jul. 1 [cited 2026 Sep. 30];4(2):111-8. available from: https://he02.tci-thaijo.org/index.php/tjog/article/view/257833