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How San Francisco's e-cig ban could cause a "flourishing black market"

San Francisco will become the first U.S. city to ban e-cigarette sales, after a unanimous vote by its board of supervisors on Tuesday. The mayor has indicated she will sign the measure. E-cigarettes have not been approved by the FDA, and the agency has called e-cigarette use by young people an “epidemic.” CBS News medical contributor Dr. Tara Narula and CBS News legal analyst Rikki Klieman join “CBS This Morning” to discuss the safety and legality of the ban.
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