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Avery, Rosemary J and Kalaji, Motasem and Niederdeppe, Jeff and Mathios, Alan and Dorf, Michael and Byrne, Sahara and Safi, Amelia Greiner (2023) Perceived threat and fear responses to e-cigarette warning label messages: results from 16 focus groups with U.S. youth and adults. PLoS ONE , 18 , (6) .