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1
0002-9378(90)90604-6
0002-9378(90)90604-6
http://dx.doi.org/10.1016/0002-9378(90)90604-6
The effect of physical activity during pregnancy on preterm delivery and birth weight.
P356
Q43899742-92BEAF9B-3818-4A17-BB64-250D43574CEA
P356
0002-9378(90)90604-6
http://dx.doi.org/10.1016/0002-9378(90)90604-6