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

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<p><a href="http://www.sciencedirect.com/science?_ob=ArticleURL&#38;_udi=B6WH0-4F9737K-3&#38;_user=10&#38;_coverDate=08/31/2005&#38;_rdoc=1&#38;_fmt=high&#38;_orig=search&#38;_origin=search&#38;_sort=d&#38;_docanchor=&#38;view=c&#38;_acct=C000050221&#38;_version=1&#38;_urlVersion=0&#38;_userid=10&#38;md5=2d4981841ac90349a8b63bcea25c88bf&#38;searchtype=a" rel="nofollow">http://www.sciencedirect.com/science?_ob=ArticleURL&#38;_udi...</a>

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