(Q37066672)
Statements
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The utility of non-proportional quota sampling for recruiting at-risk women for microbicide research (English)
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Rochelle K Rosen
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Kathleen M Morrow
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Sara Vargas
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Anna L Christensen
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Liz Salomon
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Lawrence Shulman
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Candelaria Barroso
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Joseph L Fava
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27 February 2007
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586-595
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Identifiers
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