Panisara Niyomyam และ Dhirapatara Charoenvidhya; Boonchai Uerpairojkit. (2022) Uterocervical Angle Measurement for Prediction Spontaneous Preterm Birth in Twin Pregnancy. <i>Thai Journal of Obstetrics and Gynaecology</i>, <i>30</i>(5), 362-368.Panisara Niyomyam และ Dhirapatara Charoenvidhya; Boonchai Uerpairojkit. "Uterocervical Angle Measurement for Prediction Spontaneous Preterm Birth in Twin Pregnancy". Thai Journal of Obstetrics and Gynaecology 30 (2022):362-368.Panisara Niyomyam และ Dhirapatara Charoenvidhya; Boonchai Uerpairojkit. Uterocervical Angle Measurement for Prediction Spontaneous Preterm Birth in Twin Pregnancy. PIMDEE Co. Ltd.:ม.ป.ท. 2022.