Moms' smoking in pregnancy tied to girls' (earlier) puberty (reuters.com)

I wonder if women who smoke during pregnancy are less likely to have a father present a decade later, which is also related to earlier menarche

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi...

not tied. LINKED. tied makes it sound like the smoking causes this. that we do not know.