1.
Chaiyarach ส, Kongwattanakul เ, Komwilaisak ร. Ultrasound Uterine Cervical Angle Screening At Second Trimester to Predict Spontaneous Preterm Birth in Singleton Pregnancy. SRIMEDJ [Internet]. 2021 Oct. 4 [cited 2022 May 26];36(5):522-6. Available from: https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/252551