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Silke Schmidt,博士,居住在威斯康辛州麦迪逊市,撰写关于科学、健康和环境的文章。
https://www.govinfo.gov/content/pkg/CFR-2019-title21-vol3/pdf/CFR-2019-title21-vol3-sec184-1666.pdfhttps://www.govinfo.gov/content/pkg/CFR-2019-title21-vol3/pdf/CFR-2019-title21-vol3-sec182-1320.pdfhttps://www.govinfo.gov/content/pkg/FR-2020-01-07/pdf/2019-28539.pdfhttps://no-smoke.org/wp-content/uploads/pdf/ecigslaws.pdf