1. Maternal-FetaI Medicine Committee, The Society of Obstetricians and Gynaecologists of Canada, Management of post-term pregnancy, Committee Opinion. J Soc Obstet Gynaecol Can 1994;164:1581-6.
2. Post-term pregnancy: induction or surveillance?;Crowley,1989
3. Prospective risk of stillbirth;Feldman;Obstet Gynecol,1992
4. Routine ultrasonography in early pregnancy;Neilson,1992
5. Studies in prolonged pregnancy. I. The incidence of prolonged pregnancy;Beischer;Am J Obstet Gynecol,1969