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Shiferaw S, Spigt M, Seme A, Amogne A, Skrøvseth S, Desta S, Radloff S, Tsui A, GeertJan D.Shiferaw S, et al.PLoS One. 2017 Nov 13;12(11):e0187311. doi: 10.1371/journal.pone.0187311. eCollection 2017.PLoS One. 2017.PMID: 29131860Free PMC article.
Gillespie D, Ahmed S, Tsui A, Radloff S.Gillespie D, et al.Bull World Health Organ. 2007 Feb;85(2):100-7. doi: 10.2471/blt.06.033829.Bull World Health Organ. 2007.PMID: 17308730Free PMC article.
Shiferaw S, Spigt M, Seme A, Amogne A, Skrøvseth S, Desta S, Radloff S, Tsui A, GeertJan D.Shiferaw S, et al.PLoS One. 2018 Jan 29;13(1):e0192258. doi: 10.1371/journal.pone.0192258. eCollection 2018.PLoS One. 2018.PMID: 29377963Free PMC article.