ISSN 1660-4601. PMC 5858382. PMID 29439464. This text incorporates textual content by Sheila Yu, Patricia Escobedo, Robert Garcia, Tess Boley Cruz, Jennifer B. Unger, Lourdes Baezconde-Garbanati, Leah Meza, and Steve Sussman accessible beneath the CC BY 4.0 license. ISSN 1660-4601. PMC 6068822. PMID 29949861. This text incorporates text by Walton Sumner and Konstantinos Farsalinos out there below the CC BY 4.Zero license.

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Lee, vapehome Joseph; D'Angelo, Heather; Kuteh, Jaleel; Martin, Ryan (2016). "Identification of Vape Shops in Two North Carolina Counties: An Approach for States with out Retailer Licensing".