Pinsky, who recently treated American Idol singer Jessica Sierra, has attacked the advice MCGraw gave Spears when he visited her in hospital following her recent stand-off with police - and challenged the TV talk show host's right to call himself a doctor. The addiction specialist claims by getting involved, MCGraw has made the situation worse.

He says, "It's never good for an addict when there are multiple sources getting involved. You have to have a unified front. Addicts love a split. it helps them maintain the chaos.
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