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. 2014 Feb 11;2:9. doi: 10.3389/fped.2014.00009

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Copyright © 2014 McCormack and Best.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Number of pharmacokinetic clinical trials conducted in pregnancy. The year 2013 includes those articles index for MEDLINE by August 31, 2013 only. This figure displays the absolute number of articles meeting the search terms, displayed by year.