1. Continuous cardiotocography (CTG) as a form of electronic fetal monitoring (EFM) for fetal assessment during labour;Alfirevic;Cochrane Database Syst Rev,2006
2. Fetal scalp blood pH sampling: its value in an active obstetric unit;Young;Am J Obstet Gynecol,1980
3. The current role of intrapartum fetal blood sampling;Parer;Clin Obstet Gynecol,1980
4. The oxygen partial pressures in the human fetus during labor and delivery;Berg,1972
5. Fetal electrocardiogram (ECG) for fetal monitoring during labour;Neilson;Cochrane Database Syst Rev,2006