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Marques MM, Alves E, Queirós C, Norton P, Henriques A.Marques MM, et al. Among authors: norton p.Occup Med (Lond). 2018 May 17;68(3):207-210. doi: 10.1093/occmed/kqy039.Occup Med (Lond). 2018.PMID: 29546385
Meireles P, Amaro J, Pinto da Costa J, Lopes MM, Varandas T, Norton P, Guimarães JT, Severo M, Barros H.Meireles P, et al. Among authors: norton p.Occup Environ Med. 2021 Sep;78(9):648-653. doi: 10.1136/oemed-2021-107519. Epub 2021 Jun 30.Occup Environ Med. 2021.PMID: 34193594Free PMC article.
Gomes N, Guedes PM, Norton P, Azevedo F, Lisboa C.Gomes N, et al. Among authors: norton p.Acta Med Port. 2020 Dec 2;33(12):803-810. doi: 10.20344/amp.12840. Epub 2020 Dec 2.Acta Med Port. 2020.PMID: 33496250Free article.Portuguese.
Sá Silva S, Severo M, Norton P, Moreira A.Sá Silva S, et al. Among authors: norton p.Porto Biomed J. 2023 Aug 3;8(4):e223. doi: 10.1097/j.pbj.0000000000000223. eCollection 2023 Jul-Aug.Porto Biomed J. 2023.PMID: 37547709Free PMC article.