Calling all lactation-info hoarders:

Can anyone direct me to the actual cites on Dettwyler's point " IQ as
related to exyended nursing" i.e, that the differences in IQ seen in
average bf child increases with time so that the bf children in the
24mo & up group had highest avg,. IQs of all?  I've got a skeptical
professor who knows how highly *I* think of Kathy's work, but...he's
an empirical man.  I wouldn't mind having them on hand anyway.  I am
having trouble getting to her web site where this info may be.
Anybody know the stats offhand?

Thanks

Joy Berry-Parks            "Childhood decides."     --Sartre