TY  - JOUR
A1  - Pickett, K.E.
A1  - Wakschlag, L.S.
A1  - Dai, L.
A1  - Leventhal, B.L. 
T1  - Fluctuations of maternal smoking during pregnancy
Y1  - 2003
JF  - Obstetrics and Gynecology 
VL  - 101
IS  - 1

ER  -