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Allan BR, Marais DJ, Denny L, Hoffman M, Shapiro S, Williamson AL.Allan BR, et al. Among authors: shapiro s.S Afr Med J. 2006 Nov;96(11):1186-90.S Afr Med J. 2006.PMID: 17167705
Cooper D, Hoffman M, Carrara H, Rosenberg L, Kelly J, Stander I, Denny L, Williamson AL, Shapiro S.Cooper D, et al. Among authors: shapiro s.BMC Public Health. 2007 Nov 27;7:341. doi: 10.1186/1471-2458-7-341.BMC Public Health. 2007.PMID: 18042284Free PMC article.
Hoffman M, Cooper D, Carrara H, Rosenberg L, Kelly J, Stander I, Williamson AL, Denny L, du Toit G, Shapiro S.Hoffman M, et al. Among authors: shapiro s.Int J Epidemiol. 2003 Aug;32(4):573-7. doi: 10.1093/ije/dyg081.Int J Epidemiol. 2003.PMID: 12913031
Rosenberg L, Kelly JP, Shapiro S, Hoffman M, Cooper D.Rosenberg L, et al. Among authors: shapiro s.S Afr Med J. 2002 Jun;92(6):447-8.S Afr Med J. 2002.PMID: 12146129No abstract available.