TY - JOUR AU - Douglas I. AU - Roberts C. AU - Peat B. AU - Algert C. AU - Tracy S. BT - Australian and New Zealand Journal of Obstetrics and Gynaecology LA - eng LB - epidemiologyjournal PY - 2002 SP - 176 EP - 81 T2 - Australian and New Zealand Journal of Obstetrics and Gynaecology TI - Trends in labour and birth interventions among low-risk women in NSW VL - 42 ER -