Migraine studies challenge usual "trigger" theory

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Migraine studies challenge usual "trigger" theory

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Migraine studies challenge usual "trigger" theory

by CBSTV Videos 3:10 mins

Dr. Joshua Cohen, a neurologist at New York's Headache Institute at St. Luke's-Roosevelt Hospital, talks to Charlie Rose and Norah O'Donnell about a pair of new studies that seek to answer the mystery behind the cause of migraines.

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