[1] UNIV NEWCASTLE,DISCIPLINE BEHAV SCR RELAT MED,FAC MED & HLTH SCI,CALLAGHAN,NSW,AUSTRALIA
[2] JOHN HUNTER HOSP,DEPT OBSTET & GYNAECOL,NEW LAMBTON HTS,NSW,AUSTRALIA
[3] UNIV NEWCASTLE,FAC MED & HLTH SCI,DISCIPLINE REPROD MED,CALLAGHAN,NSW,AUSTRALIA