(Q46568980)
Statements
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Ethical issues in longitudinal studies: the case of ELSA-Brasil (English)
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Paulo Roberto Vasconcellos-Silva
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Roberta Carvalho de Figueiredo
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Estela M L Aquino
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Claudia Medina Coeli
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Maria Jenny Araújo
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Simone M Santos
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Bruce B Duncan
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1 June 2013
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47 Suppl 2
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19-26
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