3 ms·
That doesn't make a lot of sense since there are plenty of pregnant tobacco smokers that don't smoke crack.
by clavalle 13y ago
That doesn't make a lot of sense since there are plenty of pregnant tobacco smokers that don't smoke crack.
- raldi 13y agoI'm not following; could you elaborate?
- josephlord 13y agoThe control group should be smokers not non-smokers and if all the cocaine using group are also smokers the difference should be the effect of the cocaine.