TANG, G. P.-Y., V. Y.-T. CHAN, V. K.-S. NG, W.-L. LAU, and W.-C. LEUNG. “Can Intrapartum Ultrasound Assessment of Fetal Spine and Head Position Predict Persistent Occiput Posterior Position at Delivery?”. Hong Kong Journal of Gynaecology, Obstetrics and Midwifery, vol. 16, no. 2, July 2016, doi:10.12809/hkjgom.16.2.205.