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Kruk ME, Paczkowski MM, Tegegn A, Tessema F, Hadley C, Asefa M, Galea S.Kruk ME, et al. Among authors: galea s.J Epidemiol Community Health. 2010 Nov;64(11):984-8. doi: 10.1136/jech.2009.087973. Epub 2009 Oct 12.J Epidemiol Community Health. 2010.PMID: 19822558
El-Sayed AM, Hadley C, Tessema F, Tegegn A, Cowan JA Jr, Galea S.El-Sayed AM, et al. Among authors: galea s.Spine (Phila Pa 1976). 2010 Mar 15;35(6):684-9. doi: 10.1097/BRS.0b013e3181b4926e.Spine (Phila Pa 1976). 2010.PMID: 20139812Free PMC article.