TY  - GEN
AU  - DAVIS,M E
TI  - Progress in the management of labor and delivery
SN  - 0002-9955
PY  - 1998///1101
KW  - Delivery, Obstetric
KW  - Female
KW  - Humans
KW  - Labor, Obstetric
KW  - Obstetrics
KW  - statistics & numerical data
KW  - Pregnancy
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1001/jama.1960.03020050001001
ER  -