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Nappo SA, Sanchez Z, De Oliveira LG.Nappo SA, et al.Subst Use Misuse. 2011;46(4):476-85. doi: 10.3109/10826084.2010.503480. Epub 2010 Aug 24.Subst Use Misuse. 2011.PMID: 20735215
van der Meer Sanchez Z, Nappo SA.van der Meer Sanchez Z, et al. Among authors: nappo sa.Subst Use Misuse. 2007;42(1):177-88. doi: 10.1080/10826080601094249.Subst Use Misuse. 2007.PMID: 17366132