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Halder N, Kelso JK, Milne GJ.Halder N, et al.BMC Public Health. 2010 Mar 29;10:168. doi: 10.1186/1471-2458-10-168.BMC Public Health. 2010.PMID: 20346187Free PMC article.
Kelso JK, Halder N, Postma MJ, Milne GJ.Kelso JK, et al. Among authors: halder n.BMC Public Health. 2013 Mar 8;13:211. doi: 10.1186/1471-2458-13-211.BMC Public Health. 2013.PMID: 23496898Free PMC article.
Karl S, Halder N, Kelso JK, Ritchie SA, Milne GJ.Karl S, et al. Among authors: halder n.BMC Infect Dis. 2014 Aug 20;14:447. doi: 10.1186/1471-2334-14-447.BMC Infect Dis. 2014.PMID: 25139524Free PMC article.