1. Incidence of placental abruption in relation to cigarette smoking and hypertensive disorders during pregnancy: a meta analysis of observational studies;Ananth;Obstetrics and Gynaecology,1999
2. Australian Drug Evaluation Committee, 1999. Prescribing medicines in pregnancy. An Australian categorisation of risk of drug use in pregnancy. Publications unit, Therapeutic Goods Administration, Canberra.
3. Effects of smoking during pregnancy. Five meta-analyses;Castles;American Journal of Preventive Medicine,1999
4. Detection of postnatal depression development of the 10-item Edinburgh Postnatal Depression Scale;Cox;British Journal of Psychiatry,1987
5. Department of Health and Ageing, date unknown. Drugs in pregnancy (Section 12). http://www.health.gov.au/pubs/drug/alc_hand/alc_c12.htm (last accesed 9 March 2005).