TY - CONF T1 - Predicting Preterm Birth - The Performance of Ultrasound Cervical Length, Quantitative Fetal Fibronectin and Vaginal Fluid pH Differs by Risk of Preterm Birth and Symptoms of Preterm Labour JO - REPRODUCTIVE SCIENCES PY - 2016/03/01 AU - Stern V AU - Anumba DOC ED - VL - 23 SP - 106A EP - 106A Y2 - 2025/04/12 ER -