In the same issue as the breastfeeding statement Pediatrics also has an
article on Breastfeeding the ELBW baby:

"Breastfeeding Infants Who Were Extremely Low Birth Weight"
Jo Ann Blaymore Bier, MD*; Anne E. Ferguson, MSOTR*; Yesenia Morales, BA; Jill
A. Liebling, MA‡; William Oh, MD*; and Betty R. Vohr, MD

"Results. The infants demonstrated a higher oxygen saturation and a higher
temperature during breastfeeding than during bottle feeding, and were less
likely to desaturate to <90% oxygen during breastfeeding. Mean weight gain was
greater during bottle feeding than dur-ing breastfeeding (31 vs 9 g).

Conclusions. Breastfeeding the ELBW infant is desirable from a standpoint of
improved physiologic responses, but such practice requires breastfeeding
support
and possible supplementation to optimize weight gain."

You can find the entire text at:
Pediatrics 1997;100(6). URL: http://www.pediatrics.org/
cgi/content/full/100/6/e3; breastfeeding, extremely low
birth weight infants.

.PDF (or Adobe Acrobat) files are also available
Marie Davis RN, IBCLC