TY  - GEN
AU  - JEANNERET,O
AU  - MACMAHON,B
TI  - Secular changes in rates of multiple births in the United States
SN  - 0002-9297
PY  - 1998///1101
KW  - Female
KW  - Humans
KW  - Multiple Birth Offspring
KW  - Pregnancy
KW  - Pregnancy, Multiple
KW  - United States
KW  - Vital Statistics
N1  - Publication Type: Journal Article
ER  -