While doing some research on BFHI this morning I came across a page for
Geneva Infant Feeding Association entitled "Breastfeeding Briefs." It's at:
http://www.glauco.it/tiem/source/bb20.htm

It has well-referenced brief discussions of hypoallergenic formula, bf and
SIDS, smoking, breast cancer, and other things; all referring to specific
studies, etc. You may have seen many of the articles referenced but I think
it's worth a look.

A sample:
"Advertising through the health care system is a common and very efficient
means of promoting breast milk substitutes. A survey carried out in the USA
highlighted the extent of this practice. 136 women were questioned
regarding the primed information and formula samples they had received
during their pregnancy. Half of the mothers had received no counseling on
infant feeding during pregnancy. However, 78% of the women received printed
material published by a baby milk company. 90% of women who received free
formula during pregnancy said that their health caregiver was the source.
Of mothers who planned to breastfeed, 56% received free formula from a
hospital, and 75% from private health care providers. Women who had planned
to bottle feed were less likely to receive samples. The authors believe
that "the continued participation of prenatal caregivers in promotion
efforts of formula companies provides a negative or mixed message about the
importance of breastfeeding and may be a barrier to its success".

Fleischer Michaelson K, Sauer Larsen P, Lykke Thomsen B, Samuelson G. The
Copenhagen cohort study on infant nutrition and growth: breast milk intake,
human milk macronutrients content, and influencing factors, American
Journal of Clinical Nutrition, 59: 600- 611, 1994."