Obstetrics: Management of Labor, Delivery, and the Puerperium
March, Michael R.; Adair, David C.; Veille, Jean-Claude; Burrus, David R.
Department of Obstetrics and Gynecology, Section on Materanl-Fetal Medicine, Bowman Gray School of Medicine of Wake Forest University, Winston-Salem, North Carolina.
Int J Gynecol Obstet 1996;55:105-109.
