<<Disclaimer: Verify this information before applying it to your situation.>>

I inadvertently omitted two more good articles:

http://www.aap.org/policy/re9729.html
This article contains the AMERICAN ACADEMY OF PEDIATRICS's official stance
on breastfeeding. Quick except is below, but it is worth taking time to read
the entire article.

Exclusive breastfeeding is ideal nutrition and sufficient to support optimal
growth and development for approximately the first 6 months after birth.
Infants weaned before 12 months of age should not receive cow's milk
feedings but should receive iron-fortified infant formula. Gradual
introduction of iron-enriched solid foods in the second half of the first
year should complement the breast milk diet. It is recommended that
breastfeeding continue for at least 12 months, and thereafter for as long as
mutually desired.

http://www.sciencenews.org/20020525/food.asp
This article entitled On Wheat and Weaning is from Science News. The section
called Probing an Epidemic is particularly intresting. From the website:
Between 1985 and 1987, Sweden experienced a fourfold spike in the incidence
of celiac disease among children under age 2, [so researchers there] looked
for changing trends throughout a 2-decade period that spanned the epidemic.
Their findings suggested that longer breastfeeding protected against early
onset of the disease, as did a very gradual introduction of gluten-rich
cereal products.

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