If smoking during pregnancy causes lower birth weight but not things such as crime, cognitive ability, mental illness, do we really care?
Because it seems that smoking during pregnancy does not cause the more important outcomeshttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC4194213/ …
0 replies
2 retweets
4 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.