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Martins AC, Guia D, Saraiva M, Pereira T.Martins AC, et al.Int J Environ Res Public Health. 2020 Feb 15;17(4):1258. doi: 10.3390/ijerph17041258.Int J Environ Res Public Health. 2020.PMID: 32075307Free PMC article.Clinical Trial.
Caseiro A, Rocha C, Silva AM, Ferreira C, Silva I, Clemente M, Cipriano I, Saraiva M, Barreira R, Azenha J, Loureiro MH, Martins A, Pereira T.Caseiro A, et al.Int J Environ Res Public Health. 2020 Jan 22;17(3):718. doi: 10.3390/ijerph17030718.Int J Environ Res Public Health. 2020.PMID: 31979121Free PMC article.