1. Sandmire HF. Whither electronic fetal monitoring? Obstet Gynecol 1990;76:1130–4.
2. Lagrew DC, Freeman FK. Management of postdate pregnancy. Am J Obstet Gynecol 1986;154:13–18.
3. Boyce A, Mayaux MJ, Schwartz D. Classical and ‘true’ gestational postmaturity. Am J Obstet Gynecol 1976;125:911–14.
4. McClure-Brown JC. Postmaturity. Am J Obstet Gynecol 1963;85: 573–82.
5. Crowley P. Elective induction of labour at 41+ weeks gestation. In: Chalmers I, editor. Oxford database of perinatal trials. Version 1.2, disk issue 5, record 4144. Oxford: Oxford University Press, 1991.