U.S. Senate probes painkiller makers, allied groups

A U.S. Senate panel has launched a probe of possible links between three drugmakers and nonprofit medical groups that advocated for increasing the use of prescription painkillers, now the target of a nationwide law enforcement crackdown.

http://www.chicagotribune.com/business/breaking/chi-us-senate-probes-painkiller-makers-allied-groups-20120509,0,4955940.story