I've gathered all of the FDA warnings and some of the EU warnings (they say don't use them) at the link below.
The FDA itself says these should not be used until all other possibilities have been exhausted. Sadly the doctors are not getting the message and are giving them out like candy.
The FDA itself says these should not be used until all other possibilities have been exhausted. Sadly the doctors are not getting the message and are giving them out like candy.
http://www.kpaddock.com/fq