forty-six women were commenced and managed on a methadone maintenance programme based at the drug and alcohol clinic at westmead hospital ( group i ) , 12 women were maintained on long-term methadone therapy by outside prescribers ( group ii ) , 12 women not on methadone continued to use heroin through the pregnancy ( group iii ) , 14 women used heroin intermittently ( group iv ) .
C0025605
methadone
C0032961
pregnancy