Wibisono JJ, Onasis S, Nikendari SMR, Andhika A, Wibisono MG. Transvaginal Ultrasound as an Indicator of Preterm Birth. JKM [Internet]. 2023 Jun. 12 [cited 2026 Jan. 8];12(2):146-8. Available from: https://ojs.uph.edu/index.php/MED/article/view/7039