Parents are cautioned not to prop infant bottles because it can lead
to choking, aspiration. I need to know how many infants have died, or
visited ER, needed medical care  etc associated with propping a baby
bottle. I would like world wide information, but national stats would
be good.

Hi,
one problem with any statistics on this will be that very "soft".  We
are talking about infant deaths at home, and there aren't many parents
or child carers that are going to admit that they suspect that bottle
propping was the cause of death, and police and coroners will also
have trouble identifying it.  Yes, there are sites that mention cases.
 Search with:

"infant mortality" bottle propped

But a great many of the hits have nothing to do with your question.

http://www.cdc.gov/nchs/fastats/infmort.htm

This site gives lots of statistics and links, but doesn't mention this
cause of death, included in the 31 % "residue" of "other causes" after
the nine defined causes.