TY  - RPRT
A1  - Martinez, G.
A1  - Copen, C.E.
A1  - Abma, J.C.
T1  - Teenagers in the United States: Sexual activity, contraceptive use, and childbearing, 2006–2010 National Survey of Family Growth. Data from the National Survey of Family Growth
Y1  - 2011
PB  - National Center for Health Statistics
CY  - Washington
T3  - Vital and Health Statistics 23(31)

ER  -