1. House of Commons Health Committee. Second report: maternity services,1992
2. Effective care in pregnancy and childbirth;Chalmers, I.,1989
3. EG. Health after childbirth;MacArthur, C.; Lewis, M.; Knox,1991
4. Monitoring maternity services by postal questionnaire: congruity between mothers' reports and their obstetric records;Martin, C.J.;Stat Med,1987
5. How does the mode of delivery affect the cost of maternity care? BrJ7 Obstet Gynaecol;Clark, L.; Mugford, M.; Paterson, C.,1991