Joy -
I don't have the new Riordan/Auerbach yet (sigh), but I'm sure Tina Smillie
must have the older one around.  Check on the bottom of page 126: it quotes a
1977 study by H. Blair "A Natural History of Childhood Asthma".  It states
"More children who had not been bf had severe asthma as compared with those
who had been bf."  Don't know if there's anything more recent than that, but
if there is the CBI will come up with it.  (Say hello to Tina for me.)
Cynthia D. Payne
LLL of Berkshire County Mass.