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Bon Jovi guitarist Richie Sambora has undergone three known stints in rehab - the latest being in April 2011, when he was treated for alcohol addiction. He also checked into a facility for the same issue in 2007 and has spoken about his past problems with painkillers.
(Pictured: Richie Sambora of Bon Jovi performs on Radio 1 in the UK in 2009.)
( Photo / flickr.com/photos/radio1interactive/)