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Paediatr Perinat Epidemiol. 2013 Jan;27(1):29-30. doi: 10.1111/ppe.12019.

Response to Professor Olsen's commentary on 'random sampling - is it worth it?'.

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School of Public Health, Yale University, New Haven, CT 06510, USA. michael.bracken@yale.edu

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PMID:
23215708
DOI:
10.1111/ppe.12019
[Indexed for MEDLINE]
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