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Briët JM, van Wassenaer AG, Dekker FW, de Vijlder JJ, van Baar A, Kok JH.Briët JM, et al. Among authors: kok jh.Pediatrics. 2001 Apr;107(4):712-8. doi: 10.1542/peds.107.4.712.Pediatrics. 2001.PMID: 11335749Clinical Trial.