TY  - RPRT
TI  - Active management: a continuing benefit in nulliparous labor.
AU  - C O'Herlihy
PY  - 1993
DO  - 10.1111/j.1523-536x.1993.tb00424.x
UR  - https://pubmed.ncbi.nlm.nih.gov/8240614/
ID  - 8240614
ER  -