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Bulletin of the World Health Organization [Bull World Health Organ] 2008 Jul; Vol. 86 (7), pp. 552-58.Publisher: World Health Organization Country of Publication: Switzerland NLM ID: 7507052 Publication Model: Print Cited Medium: Internet ISSN:
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Journal of southern African studies [J South Afr Stud] 2001; Vol. 27 (3), pp. 429-43.Publisher: Oxford University Press Country of Publication: England NLM ID: 9885700 Publication Model: Print Cited Medium: Print ISSN: 0305-7070