Journal of Epidemiology
Online ISSN : 1349-9092
Print ISSN : 0917-5040
ISSN-L : 0917-5040
Editorial
Overcoming the Difficulties of Cohort Studies
Kazunori Kayaba
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JOURNAL FREE ACCESS

2013 Volume 23 Issue 3 Pages 156-157

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© 2013 Japan Epidemiological Association. This is an open access article distributed under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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