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Kehl SM, La Marca-Ghaemmaghami P, Haller M, Pichler-Stachl E, Bucher HU, Bassler D, Haslbeck FB.Kehl SM, et al. Among authors: bassler d.Int J Environ Res Public Health. 2020 Dec 31;18(1):265. doi: 10.3390/ijerph18010265.Int J Environ Res Public Health. 2020.PMID: 33396496Free PMC article.Clinical Trial.