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Shadbolt B.Shadbolt B.Aust N Z J Public Health. 1996 Apr;20(2):172-80. doi: 10.1111/j.1753-6405.1996.tb01813.x.Aust N Z J Public Health. 1996.PMID: 8799093Free article.
Shadbolt B, McCallum J, Bourne M, Singh M.Shadbolt B, et al.Aust Health Rev. 1998;21(3):150-67. doi: 10.1071/ah980150.Aust Health Rev. 1998.PMID: 10185682