TY  - JOUR
A1  - Finer, L.B. 
A1  - Zolna, M. 
T1  - Shifts in intended and unintended pregnancies in the United States: 2001-2008
Y1  - 2014
DO  - 10.2105/AJPH.2013.301416
JF  - American Journal of Public Health 
VL  - 104

ER  -