1. Spinal (lumbar) epidural block;Bonica,1969
2. Maternal cardiovascular dynamics: The influence of gestational age on the maternal cardiovascular response to posture and exercise;Ueland;Am J Obstet Gynecol,1969
3. Effect of the left lateral recumbent position compared with the supine and upright positions on placental blood flow in normal late pregnancy;Suonio;Ann Clin Res,1976
4. Obstetric anaesthesia delays and complications. Confidential Enquiry into Stillbirths and Deaths in Infancy. 7th Annual Report. Maternal and Child Health Consortium, June 2000: 41-52.
5. Which position is more comfortable for the parturient during identification of the epidural space?;Vincent RD Chestnut;Int J Obstet Anesth,1991