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Pengpid S, Peltzer K, Skaal L, van der Heever H, Van Hal G.Pengpid S, et al. Among authors: skaal l.BMC Public Health. 2012 Feb 14;12:127. doi: 10.1186/1471-2458-12-127.BMC Public Health. 2012.PMID: 22333738Free PMC article.Clinical Trial.
Pengpid S, Peltzer K, van der Heever H, Skaal L.Pengpid S, et al. Among authors: skaal l.Int J Environ Res Public Health. 2013 May 21;10(5):2043-57. doi: 10.3390/ijerph10052043.Int J Environ Res Public Health. 2013.PMID: 23698697Free PMC article.Clinical Trial.
Douglas M, Kgatla N, Sodi T, Musinguzi G, Mothiba T, Skaal L, Makgahlela M, Bastiaens H.Douglas M, et al. Among authors: skaal l.BMC Cardiovasc Disord. 2021 Oct 12;21(1):492. doi: 10.1186/s12872-021-02290-1.BMC Cardiovasc Disord. 2021.PMID: 34641818Free PMC article.