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Dahoma M, Johnston LG, Holman A, Miller LA, Mussa M, Othman A, Khatib A, Issa R, Kendall C, Kim AA.Dahoma M, et al. Among authors: johnston lg.AIDS Behav. 2011 Jan;15(1):186-92. doi: 10.1007/s10461-009-9646-7.AIDS Behav. 2011.PMID: 19997862
Johnston LG, Holman A, Dahoma M, Miller LA, Kim E, Mussa M, Othman AA, Kim A, Kendall C, Sabin K.Johnston LG, et al.Int J Drug Policy. 2010 Nov;21(6):485-92. doi: 10.1016/j.drugpo.2010.06.001. Epub 2010 Jul 16.Int J Drug Policy. 2010.PMID: 20638262
McCreesh N, Johnston LG, Copas A, Sonnenberg P, Seeley J, Hayes RJ, Frost SD, White RG.McCreesh N, et al. Among authors: johnston lg.Int J Health Geogr. 2011 Oct 18;10:56. doi: 10.1186/1476-072X-10-56.Int J Health Geogr. 2011.PMID: 22008416Free PMC article.