1. Epidural sufentanil for analgesia for labor and delivery;Steinberg;Reg. Anesth.,1989
2. Lack effect of walking on labor and delivery;Bloom;New Engl. J. Med.,1998
3. La déambulation sous péridurale lors du travail modifie-t-elle les conditions d’extraction foetale?;Asselineau;Contracept. Fertil. Sex,1996
4. Anesthésie péridurale et forceps;Aubard;Gazette Medicale,1988
5. Epidural analgesia and instrumental delivery;Walton;Anaesthesia,1984